Compiled by The Dodger 2016: re-edit, 2018
(supports "The Companion to Astrolog32", with data from many sources)

Skip to DST SECTION, alphabetically by country 

This page can supply the difference to Greenwich Time (U.T.) for nearly every country in the world, including its DST, with a glance at its time-offset history.
Check the two parts below, either NATIONS' TIME OFF-SETS to U.T., GROUPED by AREA, or, above, find a link straight to DST SECTION. Any country whose area you don't know, go Ctrl+F to find the references.

Minus, or Plus? - These are REAL-WORLD offsets, before or behind Greenwich Time (UT). Astrolog users: be aware that the opposite sign must be put in Astrolog's TimeZone box from those actual time-shifts listed below (and you don't ever need to put the 'plus' for a westing)

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        NATIONS' TIME OFF-SETS to UT, GROUPED by AREA Choose area:

North, Central & island America - Russia - Africa - Europe - Atlantic - Middle East - Caucasus

Indian area - East Asia - Australia, N.Z. - Indonesia & Philippines - Pacific - South America

In Canada, several time-zones segment the country, from east to west:

• Newfoundland, NF, (Gander, St Johns) is UT-3.30hrs. (In Oct 1960, was UT-3.30', as was coast of Labrador).
• New Brunswick, NB, was and is UT-4, as also, Nova Scotia NS (e.g.Halifax), and Prince Edward Island PE.
• Eastern Ontario, ON, (e.g Toronto, Ottawa, i.e. east of 60W), and Quebec QC (e.g Montreal) use the US's EST, UT-5.
• Manitoba, MB, (Winnepeg), Western Ontario ON (Thunder Bay), and the S.E. corner of Saskatchewan match the US's CST, UT-6.
• Alberta, AB, (Calgary, Edmonton), with most of NorthWest Territories, NT, and most of Saskatchewan (see above), SK, keep the US's MST, UT-7. Also UT-7, Peace River & Kootenay in BC. (In Oct 1960, NorthWest Terr. used 5 zones: E of W, 68W, UT-4; 68W to 85W, UT-5; 85W to 102W, UT-6; 102W to 120W, UT-7; 120W westward, UT-8).
• British Columbia, BC, mostly, (e.g Vancouver), and Yukon, YT, match PST, UT-8; also Tungsten, Cantung Mine in Northwest Territories.

Before 1906, no zones applied and LMT should be used. Canada law derogates choice of timezone to towns and states.
There are many inconsistencies by individual city or town: see [DST].
Saskatchewan alone does not apply a summertime shift.

Mostly now, Canada's Daylight Saving Time begins at 2:00 a.m. local time on the second Sunday in March. On the first Sunday in November areas on Daylight Saving Time return to Standard Time at 2:00 a.m. This puts Canada on the same basis as USA.
(In 2011 Newfoundland and Labrador proclaimed an amendment to the Standard Time Act which puts their observance of Daylight Saving Time in line with the rest of Canada effective November 6, 2011. Previously, Newfoundland and Labrador began and ended Daylight Saving Time one minute after midnight (12:01 a.m.) local time.)

Before legislation in 2006, Canada had observed Daylight Saving Time from the first Sunday in April until the last Sunday in October.

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The United States has five onshore time-zones, all currently using [DST] except Arizona in the UT-7 zone, which had DST in only one year after the wars, namely 1967.

Eastern Standard, (EST), UT-5; States are:	Delaware, Dist.Columbia, Florida [1], Georgia, S. Carolina, N. Carolina, Virginia, Kentucky, Indiana [2], Ohio, Michigan [3], Pennsylvania, New York S., Maryland, Rhode Island, New Jersey, Maine, Vermont, New Hampshire, Connecticut, Massachusetts
Central Standard, (CST), UT-6; States are:	eastern N. Dakota, Missouri, Mississippi, Illinois, eastern S. Dakota, Iowa, Nebraska, Kansas [8], Minnesota, Wisconsin, Texas [7], Arkansas, Tennessee, Oklahoma, Alabama, Louisiana
Mountain Standard, (MST), UT-7; States are:	Colorado, Montana, Idaho [5], Wyoming, western S. Dakota, western N. Dakota, Arizona, New Mexico, Utah
Pacific Standard, (PST), UT-8; States are:	California, Washington State, Oregon, Nevada [6]
Alaska Standard (AKST) is UT-9; Alaska, only: [4]	Re Alaska: at this latitude, a small distance east or west translates to an huge shift of noon-time, and in Nome, noon is at 3pm AKST; in Fairbanks, sunset in summer is after midnight AKST. (In Oct 1960, Alaska had three main timezones, UT-8 round Juneau, UT-9 from Cross Sound to 141W, UT-10 from 141W to 162W Nome Time & Anchorage (became Bering Time '67). A base-time of UT+9, to be used generally, came in on 30 Nov. 1983. Abolishing DST in Alaska has been proposed twice, since).

The modern kind of time-zoning started with five standard railway times being introduced on 18 November 1883. Prior to that, each community had its own time. See History. The Calder Act took away the option of places to choose their zone, and the present timezones have changed relatively little since 1924.

Some Exceptions:
[1] West Florida is UT-6.
[2] Indiana, in 2006, lost 8 counties in the west from the its generally adopted UT-5, to the UT-6 which another 10 counties had already decided on. Changes here are still being fought over - see Wikipedia's page for latest.
[3] In Michigan, the counties of Gogerbie, Iron, Dickinson & Menominee are in UT-6 zone.
[4]: Still at UT-8, Hyder and Metlaklata areas..
[5]: Idaho: to north of Salmon Riv. is UT-8.
[6]: Nevada: Jackpot, West Wendover and Duck Valley Reservation, UT-7.
[7]: Texas: El Paso, Hudspeth and N.W. Culberston, UT-7.
[8]: Kansas: Greeley, Hamilton, Sherman and Wallace townships in UT-7.

U.S. Offshore:
Hawaii and the Aleutian Isl. keep UT-10, (Until 8 Jun '47, Hawaii's zone was UT-10.30 - they had permanent wartime DST 9 Feb '42 to 30 Sep '45).
Midway UT-11, (since 1901; had DST 1956 only - from 3 Jun to 2 Sept.); American Samoa is UT-11; Panama UT-5 - both with no DST.
The Marshall Islands UT+12. Guam UT+10. The 'Outlying Isles' in the atlas, Howland Island and Baker Island UT+12, Palmyra and Johnson Atolls (Wake Isl.) possibly UT+11 which I speculate from their longitude banding.
US Virgin Islands, UT+4, Atlantic Standard Time, AST.
Puerto Rico has been UT-4 since 1925, bar an interval of all-year wartime DST of UT-3 between 1 May 1942 and 30 Sep 1945. Otherwise no DST, with these.

History:
Before zoning, each town and city reckoned its time west, or east, of Washington D.C. The bill shown to right was published 1857.

Timezones established by railroads for safety's and simplicity's sake, at noon on 18 nov 1883 without respect of state lines and with the addition of an 'Atlantic Time', UT-4 - (north-east Maine), also known as 'Intercolonial Time'. This followed W.F.Allan's survey in 1880, who had advocated the primacy of fixed bands of railroad time, and cities' free choices between one band and another - which accounts for the zig-zag outlines of the Timezones. (Towns still maintained local times, the more likely, the further from commerce and railroad arteries).

Central TimeZone evolved to be huge and by 1913 included Florida, Georgia, Indiana, Kentucky, Michigan, Ohio, north-eastern Pennsylvania, while the Carolinas, Virginias had been split until 1890. In 1913 (see map), Pennsylvania was about to abandon being split, mostly Eastern, but part Central. Salamanca (NY), Clifton Forge (VA), Columbia (SC) and Savannah (GA) marked the most eastern cities within Central Time..

In the mid-West, Pacific Time-Zone (1913) almost met Central Time-Zone at El Paso! (El Paso was on Mountain Time) - the South of Arizona (till '44), West California, Oregon (most) and Washington State (most) were in Pacific Time. Before the 1889 changes, Pacific Time had been bigger still - Idaho, Montana and Utah were split, their western parts being in Pacific Time (though both boundary-edges of the Mountain Zone were vague, in those days).

In 1918 zoning became a matter of law by the Calder Act (Standard Time Act). To opt for one hour band or an adjacent one was at the appeal of even the smallest legislative unit to the Interstate Commerce Commission, which drew the lines. The Mountain Time zone later shed Nevada, and consolidated around Colorado, Montana, Utah and Wyoming to absorb all Arizona and the western tip of Texas, with the western halves of South Dakota and Nebraska: the south of Idaho stayed in Mountain Time, the northern tip re-joined Pacific Time. (A part of Oregon is on Mountain Time, too - see map.)
In 1961 eastern Indiana and much of Kentucky migrated to Eastern Time.

1966 saw firmer law regarding both DST and zones (Uniform Time Act). See [DST]
Further shifts occurred 1966-69: among others, North Dakota's counties south and west of the Missouri adopted Mountain Time, and Indiana went to Eastern Time bar twelve counties.

BEFORE 1884, 'LMT' MAY BE USED FOR ALL U.S. NATIVITIES

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Central America: In most of Mexico, and all the rest of Central America bar Panama, the timezone is UT-6 (which is CST in US).

Mexico: currently in 2015:

• most of the country, & including Mexico City, uses UT-6 with DST (Tiempo del Centro), but see footnote 2
• the south-east state (Quintana Roo) uses UT-5 without DST, but see Cancun - footnote 3.
• Mexican 'Mountain Time' is UT-7 with DST (Baja Calif. Sur, Chihuahua, Narayit, Sinaloa, Colima bar the Archipeligo de Revillagigedo - see footnote 1); - generally, see footnote 2
• Mexico's 'Pacific Time' is UT-7 without DST (state of Sonora only)
• and the north-west bit (Baja California Norte) uses UT-8 with DST; and see footnote 2

footnote 1: Mexico's far-offshore islands (Archipeligo de Revillagigedo) have no DST: Clarion uses UT-8; San Benedicto, Socorro and Roca Partida use UT-7.
footnote 2: towns within 20 km of the US border, excepting in Sonora, can use US DST.
footnote 3: Cancun is listed as having DST from 1996 to 2014, and from 2 Aug '98, on a TZ not of UT-5, but of UT-6, until 1 Feb 2015; thereafter, UT-5, - more, see DST section.

Past TZ Changes: clocks in Mexico were re-set from various LMTs on 1 Jan 1922, and Mexico had two different timezones, UT-6 for most, but Chihuahua, Sinaloa, Sonora, and the west were on UT-7 from 1922; then on 10 Jun 1927, a nationwide timezone of UT-6 was adopted lasting through 1930, as Mexico City Distrito Federal, went from UT-7 to UT -6, along with every other state.
A wave of timezone vacillations followed in a few states: Chihuahua, Sinaloa and Mexico City (maybe with others) now reverted 15 Nov '30 to UT-7, anticipating a mandated new TZ trial in '31.
So in 1931, May 1, these states adopted UT-6, and on 1st Oct, went back to UT-7.
then in 1932, on 1 Apr, Mexico City made UT-6 their new timezone for eighteen years, while Chihuahua adopted UT-6 without DST for next 64 years: it took arrival of national DST 1996 to encourage Chihuahua's reversion to UT-7 in 98.
Sinaloa took up UT-6 1st Apr '32, too, but only till 1942.

World War 2:
Mexico City: 1939, DST, 5 feb - 25 jun. at UT-5
Mexico City: 1940, DST, 9 dec - 1941, 1 apr at UT-5
In 1942, Sonora, with Sinaloa, split away from the generally agreed UT-6 zone, by using UT-7 from 24 Apr., and in 1949, adopting UT-8 on 14th or 24 Jan.; they stuck with UT-8 till 1970.
Mexico City: 1943, DST, 16 dec - 1944, 1 may, at UT-5. (Then up to 1950, no DST.)

Mexico legally enacted these summer TZ manoeuvres before 1988 not as DST adjustments, but by changing the state's timezone: nevertheless, I tend to regard the Time Zone changes 1931, '39 - '45, and '88 as if they were DST shifts, and enquiries as to Mexican DST (below) should refer back to this part for 'pseudo-DSTs'.

In 1950, Mexico City, ever tinkering, abandoned UT-6 for UT-5, Sun, 12 Feb, to Sun, 30 Jul, when reverted UT-6 again.

In 1970, on Jan 1, Narayit, Sinaloa and Sonora adopted UT-7. Westernmost Mexico, Baja Calif., Norte, i.e. Mexicali, was UT-8 in the Seventies.
In 1981, 23 Dec, Chiapas and Yucutan tried UT-5 for a year to 2 Dec 82, when they reverted to UT-6.
In 1988 Durango, Tamaulipas, Mexico City, Coahuila, and Nuevo Leon, joined in using a trial DST of UT-5 between 3 Apr - 30 Oct, which was abandoned when 1989 came around.

DST across the most of Mexico 1996: 1996 saw the arrival of the modern & widespread use of DST.
1.  It applies in these UT -6 states: Aguascalientes, Campeche, Chiapas *, Coahuila, Colima (barring Islas Revillagigedo), Distrito Federal (Mexico City), Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, México, Michoacán, Morelos, Nayarit ( only Bahía de Banderas), Nuevo León, Oaxaca, Puebla, Querétaro, San Luis Potosí, Tabasco, Tamaulipas, Tlaxcala, Veracruz, Yucatán, Zacatecas;
*   "Zapatista communes don't apply DST (el horario de verano)"
2.  It applies in these UT -7 states: Baja California Sur, Colima, Chihuahua, Nayarit (but not Bahía de Banderas), Sinaloa.
2a.  It applied in Sonora, but 1998, 25th oct, saw the last of DST in Sonora, to date.
3.  It applies in this UT -8 state: Baja California Norte.

More detail on Mexico's various DST arrangements - see [DST].


Continental Isthmus
Central American countries at UT-6 are: Costa Rica [historic DST], Guatemala [historic DST], Belize (was Honduras) [historic DST], (In Oct 1960, was UT-6), and Nicaragua [historic DST], El Salvador.

Only Panama uses UT-5, & it has never had DST.

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The West Indies are largely UT-4; this is used by Anguilla, Antigua, Montserrat, Dominica, Barbados, Bermuda, Dominican Rep. (from UT-4.40' on 1 Apr 1933 to UT-5; 1974, oct 27, to UT-4) [DST], Grenada, Martinique, Guadeloupe, St Lucia, Virgin Isl., and Puerto Rico (wartime DST - see under US above); Nevis & Kitts, Trinidad & Tobago, Ex-Netherlands Antilles, no DST, (in Oct 1960, was on UT-4.30, and had been since Feb 1912;.. opted UT-5 1917 to '24: adopted UT-4 on Jan 1, 1965). Now separate states snd municipalities under Crown of the Netherlands: Aruba, Curacao, Saba, Sint Maarten, Sint Eustatius..

Saint Pierre and Miquelon uses UT-3, [DST] (in Oct 1960 was UT-3)

The following are UT-5:
The Bahamas [DST], Cuba [DST], Jamaica, Haiti (adopted UT-5 24 Jan 1917) [DST], and the Cayman Isl.; Turks & Caicos.

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Russia & satellite states, after abandoning DST in 2010 [historic DST], have moved to new all-year times, across all zones, as of 28 Oct, 2011 - this includes Moldova and Kaliningrad. Here's the current situation:

• On the European side of Russia, Kaliningrad on the Baltic (formerly Konigsberg) keeps UT+3, which they call MSK-1. Kalinin used UT+1 1942 - 1 Jan '45, with DST; UT+2, with DST, used till 1 Jan '46. UT+3 thereafter, no DST [historic DST]; Belarus has been UT+2 since 1991, it was UT+3 from 1930 to the Occupation 1942 - '44, and UT+3 from 3 Jul '44. [historic DST]. Moldova has been UT+2 since 1990; it was UT+3 from 1930 to the Occupation 1942 - '44, and UT+3 from 3 Jul '44.[historic DST]
• Moscow zone (MSK time) is UT+4 now, and Samara, Saratov, Kazan, Volgograd and Voronezh, all also UT+4.
• UT+5 is not used now, I think.
• Yekaterinburg is the main city in zone UT+6, which includes Perm, Omsk, Ufa, Chelyabinsk.
• Krasnoyarsk is UT+8. (Little habitation to the east of it!).
• At the Pacific coast, Yakutsk is UT+10, Vladivostok is UT+11hrs. (with most of Sakhalin Oblast), Kamchatka is UT+12 (Magadan, eastern Sakha Republ.).

Prior to a 2011 nation-wide shift of times, Moscow Time and Kiev Time were UT+3, Yekaterinberg UT+5 and so on, plus there were more zones, see a paragraph and image below about the Pre-2011 Timezoning.

NOTE 1: Ukraine was held by Moscow to be an integral part of Russia, until it chose independence (find Ukraine, in Europe); many births recorded as 'Russian' were in what is now called Ukraine.

NOTE 2: Railway Time: Russia still has Moscow Time for its whole network.

NOTE 3: Old Russian times: Solar time (use LMT) was in use until late nineteenth century (1890s), when Moscow time was declared as UT+2.30. However, when the Soviet Union was created, Moscow Time became UTC+2 and the the various other time zones were introduced throughout Russia and the rest of the Soviet Union.   Don't forget! Russia was on the Julian calendar, until Feb 14, 1918 which was their first Gregorian day.


The Pre-2011 Timezoning:
On June 21, 1930, the Soviet Union advanced all clocks by one hour, so Moscow's MSK became UT+3, and see other zones for their additions to MSK, image at right
.. and these zones may be correct for all births between June 1930 and 28 Oct 2011, so long as you take account of any [historic DST] with its Apr 1st starts each year between 1981 and 2010.

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Africa has four timezones, and very few countries have had DST, and usually inconsistently. Tunisia abandoned it in 2009, Egypt from 2011 to 2014, Madagascar, 1954, and Rep. South Africa, 1944.

WEST: Time is UT, (= GMT), in Benin (was Dahomey), Burkina Faso (was Upper Volta), Cote d'Ivoire, Gambia, Ghana (was Gold Coast), Guinea and Guinea-Bissau, Liberia (In Oct 1960, was UT-0.44.30), Mali, Mauritania, also Morocco (which adopted UT in 1913, 26 oct, 00.30am.) [DST], Senegal, Sierre Leone, Togo, and Western Sahara, [DST].
See left side of map.

WESTERN CENTRAL: in a large zone down from Algeria to Namibia, on the map coloured french blue, the following countries use UT+1, CET:
Angola, Algeria, (adopted UT on 1 Mar 1911: from 1900 - 1911 French authorities used Paris Time, UTC +0:09:21; before that, use lmt; 1940 -'45, UT+1 under Axis occupation; UT+1 adopted 1956) [historic DST]; Benin, Cameroon & its islands, Central African Republic, Chad, Equatorial Guinea & Annobon Is., Gabon, Namibia (DST, but no details), Nigeria (adopted UT+1 on 31 Aug 1919, and before that, use lmt), Niger, Republic of the Congo, and the western part of the Democratic Republic of the Congo, (e.g.Kinshasa/Leopoldville); Tunisia, as French time till 1956; [historic DST].

EASTERN CENTRAL: to the right of the above zone, in a mauve column from Libya to Republic of South Africa on the map, nations use UT+2:
Botswana (was Bechuanaland), Burundi, Democratic Republic of Congo (e.g. Kisangani, Katanga-eastern), Egypt [DST], Lesotho (was Basutoland), Malawi (was Nyasaland), Mozambique, down to Republic of South Africa [historic DST], Zambia, Zimbabwe (was Rhodesia).

EAST: the countries nearest the north-east coast, top-right on map, all use timezone UT+3:
The Comoros Is. (off-shore), Djibouti, Eritrea, Ethiopia (was Abyssinia), Kenya, with Madagascar (off-shore -use lmt before 1911), [historic DST], and Somalia, Somaliland, also Sudan and South Sudan - (but in Oct 1960, Sudan was on UT+2); down to Tanzania and Uganda.

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Europe is mostly UT+1.

To cite the current exceptions first:

• UT+2 is used by Ukraine, the Baltic States of Estonia, Latvia & Lithuania, Finland, Romania, Bulgaria, Cyprus and Greece. (Greece briefly used UT+1.24)
• UT is used by the UK [DST], the Isle of Man [DST], & the Channel Islands [DST], and, for all intents and purposes, also Eire [but Eire see footnote], [DST]; also the Canary Isles, Portugal, Iceland (in Oct 1960, was UT-1), and, according to most sources, the islands of Ascension, Tristan da Cunha, St. Helena, and the Faeroe Islands. Spain, for 39 years to 1940, and France, for 28 years to 1940, also used UT as base timezone.
• UT-1: the Azores (Portuguese) are UT-1.
• States at UT+1 are: Albania, Andorra, Austria, Belgium, Bosnia & Herzegovina, Crna Gora (Montenegro), Croatia, Czech Rep., France & Corsica, Germany, Gibraltar, Hungary, Italy & Sardinia & Sicily, Kosovo, Liechtenstein, Luxembourg, Macedonia, Malta, Monte Carlo, Netherlands, Norway, Poland, San Marino, Serbia, Slovakia, Slovenia, Spain & the Balearics, Sweden, Switzerland.

All states that are in the EU and use DST have standardised summertime shift-dates currently, though some have not ratified the E.U. Directive. These dates for DST are used also by states both near to and far outside the Union, for practicality. For details, see box-out here.

EUROPEAN Time Adoptions, plus links to DST - Alphabetically by State

  Albania, UT+1 from 1914: it bid for parliamentary autonomy Dec 1912, but was clipped in size by a 1913 meeting of Powers, to be a Kingdom around Vlore - enlarged later to west, & to Tirana. [DST] (not EU) ~ Andorra, UT+1 [DST] ~ Austria adopted UT+1 in 1893, 1st Apr.; 1884 in the Hungarian Empire parts. [DST] ~ Belarus (see Russia above) ~
 Belgium was on UT from 1892 until 1914, being war-occupied at UT+1; then reverted to UT, from 1919 to 1940, when UT+1 was imposed again (war-occupied again) - this UT+1 made permanent in 1946. Until 1925, customarily the day was deemed to start midday, so their 3am, 22nd March, 1824 was, our way, 3am, 23rd? [DST] ~
Bosnia & Herzegovina adopted UT+1 in 1884 (ex 'Yugoslavia', below), [DST] ~ Bulgaria UT+2; before 1916, they used the Julian Calendar. [DST]
 Corsica, generally as France, but Occupation (and UT+1), began Nov '42, ended Oct '43 ~ Crna Gora (was the enduringly independent Montenegro, latterly ex Yugoslavia, which see below), is UT+1 as it was within Serbia then Yugoslavia from 1918 to 2006. With the eclipse of Venice, then the Ottomans, it has expanded from a tiny inland statelet since 1830, to Serbia's loss - in 1931 it held a lot of what is now Kosovo; also Ragusa, in the north. (not EU) [DST] ~ Croatia adopted UT+1 in 1884 when part of Kingdom of Austria, and has never changed (ex 'Yugoslavia', below), [DST] ~ Czech Rep. now, as when part of Czechoslovakia, uses UT+1, as it has since 1891, when part of Kingdom of Austria. [DST]
 Denmark UT+1 since 1894 [DST]; (for Faroes, Greenland, see 'ATLANTIC EXTRA')
 Eire, (South Ireland), qualifies as UT+1 in a particular sense [see footnote, below]. Up to 1980, Dublin Time was UT, and before 1 Oct 1916, UT-0.25. Like the UK, Eire tried UT+1 & no DST from spring 1968 to Sep 1971. [DST] ~ Estonia is now UT+2, TZ history like Latvia below, after adopting UT+2 in May 1921 [DST]
 Finland UT+2 [DST], (in 1900, adopted UT+1.39'42" on 1 May 1921, moved to UT+2; in Oct 1960, still UT+2; during WW2, opposing Russia '40 - '44 with German help, still UT+2 ) ~ France, (includes Corsica), with the abandoning of local times over a century ago, used Paris Time, 9 minutes 11 secs fast of UT from 1891 until 1911, then adopted UT. Then in 1940, under occupation, CET (UT+1) was imposed on Occupied France, which became also the nationwide time, 31 Dec '42, formalised 16 Sep '45. [DST]. Corsica as Vichy France in WW2, but no info as to pre-war DST. Ile de Molene (Finisterre) has preferred year-round GMT. Overseas Protectorates & Indo-Chine, q.v. by zone ~
 Germany has been a heartland of the UT+1 timezone, since the government brought it in May 1, 1893 - both West Germany and East Germany, as they were to become, kept to this timezone. (Konigsberg adopted UT+1 on 1 Apr. 1893, abandoning UT+1.22; Danzig and the East Prussia enclave, 1919 - 1939, don't know, but probably the same). [DST] - (Germany, Federal Republic of, 1945 - '81, had no DST after WW2 till its collapse '81). History: before 1893, north German railways all used Berlin Time, (UT+0.53') from 1874.
From 1815 to 1866, German and Austrian Kingdoms combined covered most of Central Europe, from Trieste to Krakow, from Lake Garda to Konigsberg, with the addition of Alsace and Lorraine from 1870 to 1918. This one-time hegemony was trimmed after the successive World Wars, parts making the modern states of the Czech Republic, Slovenia, and a larger Poland & Switzerland, - with a Germany back at pre-1800 borders. ~ Gibraltar, used UT until 14 apr 1957 with DST, then adopted UT+1, abandoning DST until 1982, when DST re-adopted, which now conforms to EU starts and finishes. [DST] ~ Greece used UT+1.24 when it adopted Gregorian calendar 1923, but moved to UT+1 in 1924, UT+2 in 1925?; UT+1 Apr '41 - Apr '44 under occupation. In Oct 1960, and to now, UT+2 [DST] ~ Guernsey, UT but as UK, q.v '68-71; (but UT+1 1940-45 under occupation), [DST] ~
 Hungary UT+1 since 1884 (Austro-Hungarian parts), 1890 (in Kingdom of Hungary, that being to the east & south). [DST]
 Iceland, (not EU member), has used UT since some year after Oct 1960, and has no DST. It had been UT-1 for a long time. ~ Ireland, Northern, see United Kingdom, below ~ Ireland, Southern, see Eire above.
 Isle of Man, consistently UT since 1883, but in '68-71, as UK (q.v), [DST] ~ Italy, (includes Sicily, Sardinia), has used UT+1 since 1893: but northern Italian railways, from Rome as far as Milan, and including Verona, Firenze, Palermo, ran on 'Rome Time' (UT+0. 49') for 27 years from 12 Dec 1866, - Torino and Bologna adopted that railway-time in 1867, Veneto 1880, Cagliari 1886. [DST].
 Jersey, UT but as UK, q.v '68-71; (but UT+1 1940-45), [DST]
 Kosovo, UT+1 with DST. (See 'Serbia', below; Not EU) ~

Latvia: uncommitted, after leaving Russian control, until UT+2 ratified in 1926: WW2 TZ changes: 1940, on to UT+3; '41, to UT+1 with DST added; post-WW2, UT+3 was permanent until 1981, when DST started. Latvia was soon a part of the EU and adopted UT+2 basetime on 24 Sep 1989, having been on UT+3 all year since 24 Sep '88. [DST] ~ Lichtenstein, UT+1 [DST] ~ Lithuania, abandoned LMT 1919 for UT+1, though in 1920, 12 Jun - 9 Oct, they tried UT+2. They then adopted it. In WW2, TZ changes: 1940, to UT+3; 1941, to UT+1 with DST added; post-WW2, UT+3 was permanent from 1944 until 1981, when DST started. Lithuania was soon a part of the EU and adopted UT+2 basetime on 24 Sep 1989, having been on UT+3 all year since 24 Sep '88. Much as Latvia. Now UT+2 [DST] ~ Luxembourg UT+1 [DST]
 Macedonia inherited UT+1 from being a part of Serbia; - it may have reverted to the Julian Calendar during annexation by Bulgaria, 1915 - 1916; then, it was 'Vardar Banovina', in the Kingdom of Yugoslavia, and later quasi-autonomous in Tito's Yugoslavia (which see, below). (not EU) [DST] ~ Malta, UT+1 since 1893 [DST] ~ Moldova (see Russia above) ~ Monte Carlo, as France. [DST]
 Netherlands used Amsterdam Time UT+0:19 from 1909 until 1940, when UT+1 was imposed. [DST] ~ Norway UT+1 since 1895 [DST] ~
 Poland adopted UT+1 on 5 Aug 1915, abandoning UT+1.24 before; UT+2 adopted on 15 Apr 1918, but only to 1922, re-adopting UT+1. No change to standard time thereafter. Western Poland formerly part of Kingdom of Prussia. [DST] ~ Portugal, UT [DST]; (Madeira - see 'ATLANTIC EXTRA')
 Romania UT+2, but UT+1:44:24 hr, before 1931; before 1918, they used the Julian Calendar. [DST]
 San Marino, as Italy [DST] ~ Serbia adopted UT+1 between 1884 (one source), and 1912; before 1912, they used the Julian Calendar. (ex 'Yugoslavia', below; not EU. Serbia formerly controlled Kosovo). [DST] ~ Slovakia, consistently UT+1 [DST] ~ Slovenia UT+1 (ex 'Yugoslavia', below, and formerly part of Kingdom of Austria), [DST]~ Spain ran 14 minutes slow of UT until a 1 Jan 1901 adjustment to UT. DST first began 15 apr 1918. A shift of base-time to UT+1 was made 16 mar 1940 (one source: 1942), while continuing the DST. [DST].. (Balearics, don't know; Las Canarias, etc, see below 'ATLANTIC EXTRA') ~ Sweden was it seems before all other nation states, the earliest state adopter of hours-plus-or-minus from Greenwich Time after the UK, choosing UT+1 on 1 Jan 1879, and abandoning Gothenburg Time, which was UT+0.55'. [DST] ~ Switzerland, (not EU member) UT+1 since 1894. Eastern Switzerland (Tyrol) was once part of Kingdom of Austria. [DST] ~
 Turkey, European, uses UT+2, (until 1941, Turkey was UT+3); [DST] ~
 Ukraine, (not EU member) was on Kiev time, 2hrs 2' until adopting UT+2 in 1924 (and before 1912, they used the Julian Calendar). On 21 Jun 1930, an hour was added (making Kiev Time UT+3), until rescinded by Germans 20 Sep 1941 to '43 (UT+1 was imposed, and DST was added). UT+3 (with no DST) was re-instated 6 Nov 1943. In 1979 UT+4 was adopted; this was ended on 1 Jul 1990, and on 29 Sep 1991, UT+2 was adopted, and is the current timezone. [DST]
~ United Kingdom: England, Scotland and Wales have, bar an interruption for 'British Standard Time', (see British Standard Time note), officially been on Greenwich Mean Time, GMT (which is UT), since the Time Act 1880, but local adoptions gathered pace beforehand as the railways required a measure of consistency 1841-1848. Still, in the 1850s and after, local variations were normal - different standard times persisted by law in Ireland (all), Isle of Man, and Jersey & Guernsey, till 1916, 1883, 1898 & 1913 respectively.
For example, in 1848, Scotland's main cities adopted GMT on 29 Jan., yet in 1850, North Wales Time, UT-16'30", was still signalled by a noon-gun, and in 1858, local time was held to be the norm in a Dorchester court case. It may be that in the more bucolic, certainly western, parts of Britain (like N.Devon, N. Wales, maybe the Western Isles), GMT had failed to get much traction when in 1880, United Kingdom was the second state in Europe in the rush to have national zoning according with the meridians.
A part of the modern United Kingdom, Northern Ireland has used GMT (UT) since 1st Oct, 1916; before then the five counties of Northern Ireland kept to its own zoning, viz.UT-0. 23' 39s, a little fast of the rest of Ireland.
History: the Great Western Railway was the first to require station clocks all show 'G.W.R. time', in 1840; so Bath, Bristol, Exeter, Gloucester, Oxford, Swindon, Reading were the first cities anywhere called upon to abandon their LMTs.
(UK about to leave EU in 2019).   UK as DST [DST]
British Standard Time Note: from Mar 1968 to Sept 1971, an experiment ran with no DST shift in summer, but a permanent base-time shift to UT+1, - reverted Sep 1971 to UT, with summer DST re-instated.
 Yugoslavia, (Former) was a Kingdom formed out of The Kingdom of The Serbs, Croats & Slovenes, later becoming a Federation of Socialist Republics; all its refractory regions kept time at UT+1; this had been the case formerly in Bosnia, Herzegovina, Slovenia and Croatia since 1893, because Austro-Hungary was an key adopter of a single time-zone in continental Europe. Serbia followed suit 1912, likewise fledgeling nations freed from Ottoman or Bulgarian rule at war's end, 1918. Crna Gora (Montenegro) and Serbia called themselves 'Yugoslavia' still after 1992, until 2006.
See also above, the individual countries that originally made up Yugoslavia: Bosnia, Crna Gora (then Montenegro), Croatia, Herzegovina, Macedonia, Serbia, Slovenia (excepting Croatia, Slovenia, none are currently EU members).

BEFORE 1881, 'LMT' MAY BE USED FOR ALL EUROPEAN NATIVITIES, (BAR SWEDEN, & SOME BRITISH CITIES)

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Turkey and the Western Levant use UT+2: Turkey [DST] (until 1941, Turkey was UT+3), Cyprus [DST], Israel [DST], Palestine [DST], Syria [DST], Lebanon [DST], Egypt [DST], and Jordan [DST] (Jordan had abandoned DST, according to one source).

Wider Middle East: at UT+3hrs without DST are: United Arab Emirates (Fujaira, Umm al Qaiwan, etc), Yemen, Qatar, Kuwait, Bahrain and Saudi Arabia. (In Oct 1960, Aden was UT+3; Bahrein was UT+4).
Oman and Abu Dhabi are UT+4; so are the Seychelles.
Iraq too uses UT+3, [historic DST].
The Ottoman Empire, before its collapse, adopted the julian Calendar only in 1917, by skipping from 16 Feb. to 1 March. In 1918, year's start was set as Jan 1.

Caucasus & Central Asia: Abkhazia, breakaway from Georgia, see Georgia: Afghanistan UT+4.30hrs, without DST.
Armenia's standard time is UT+4 (before 28 Feb 1957, was UT+3; and also between 28 Sep '91 to 23 Sep '96, UT+3 was base-time); [historic DST].
Chechnya UT+3 currently, having tried UT+4 mar 2011 - oct 2014; [historic DST].
Georgia in Caucasus is UT+4 (before 1 Mar 1957, was UT+3; and also between 28 Sep '91 to 25 Sep '94, and in the winter 2004/5 , UT+3 was base-time); [historic DST].

Iran Standard Time is UT+3.30; it was UT+3.30 from 1946, to 1 Nov 1977, adopting UT+4, where there have been occasional summertimes, up to 1 Jan '79 reversion to UT+3.30, with DST that year only. DST started again 1991. [DST]; Ossetia (South), UT+3 (but UT+4 from time to time: from 1924, UT+3 to Mar '57, from 29 Sep '91, UT+3 to 25 Sep 94, from Jun '04 to Mar '05, and now 2014 on), DST began 1980 post-Soviets' collapse, lasting to 2004 [historic DST].
Uzbekistan, Dagestan, and Ingushetia all use UT+5 without DST, it is said; Turkmenistan also in UT+5, (between may '24 and jun '30, and between mar '91 to jan '92, UT+4) [historic DST]; UT+5 also Tadjikistan, which had [historic DST], 30 years ago; Azerbaijan, which has DST, is UT+5, [DST].
Kazakhstan, UT+6, but UT+5 in the western parts. Kyrgyzstan uses UT+6 [historic DST].

Iran and Afghanistan still use their Persian calendar, not Gregorian.

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In the Indian subcontinent: India achieves consistent time across its breadth by being 5.30 hours fast of UT all year round - has no DST but it did in 1941-'42, and subsequent wars [historic DST].
Before this modern-India-wide implementing of IST in 1947, India's port cities had been zoned locally in 1884, - east (Calcutta Time UT+6), - and west (Bombay Time UT+5), and by an allowance, these local times continued after independence, in Calcutta (Kolkata) area until 1948, and in Bombay (Mumbai) area until 1955; another surviving local zone existed also in Madras, at UT+5hrs, 21' 14'', which was also 'Railway time of India', a precursor to the India Standard Time (IST, UT+5.30), and which was introduced for the inland parts of the subcontinent in 1906.
In Karachi (now South Pakistan), an LMT was observed locally between 1842 and 1907, of UT+4hrs, 28', 12''.
Prior to 1884, the dominant time for British Raj records was Calcutta time (now Kolkata) at UT+5hrs 53'; otherwise LMT should be used outside of the big ports, in that era. In muslim provinces, be aware day-starts may be reckoned from sunset.

Domestically, the Indian Civil Calendar was defined by the Calendar Reform Committee in 1957 (up to this time there were approximately 30 different calendars in use in India). Years may also be counted in the Saka Era which began with the vernal equinox in 79 AD.

Pakistan is UT+5, (though before 29 Sep 1951, pre-partition, its timezone was UT+5:30, with wartimes in World War II). I haven't any evidence for Lahore or Karachi holding onto Karachi Time in the face of the standardisation of 1906 (see above), but I suspect that, being west even of Bombay, UT+5.30 was not welcomingly adopted.
Pakistan had DST in 2008 and 2009 [historic DST].
Bangladesh, which had DST occasionally and abandoned it in 2010 [historic DST], and Bhutan are UT+6 (from 1947 - '87, Bhutan was UT+5.30).
Nepal, singularly, keeps +5.45 ahead of GMT since 1985 - (before then, UT+5.30).
2019 news: Assam (in the north-east of India) has decided to switch to Bagaan (tea garden) Time, set an hour ahead of Indian Standard Time (IST) - or they may go for an half-hour advance.

Sri Lanka has had many time zone changes as follows:
Jan 1906, from UT+5:19 to UT+5:30.
In 1996, am May 25, UT+6:30 was adopted; same year am Oct 26, UT+6 adopted!
In 2006, am April 15, reverted to UT+5:30. [historic DST].

DST is not used currently in the sub-continent.

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North-east Asia, DST is not used currently anywhere. Japan uses UT+9 zone [historic DST], but in 1904 was using UT+8.30, according to one source.   North Korea has used UT+8.30 since 15 Aug. 2015, formerly used UT+9, (under Japanese rule, UT+9.);   South Korea uses UT+9 (1904, acc. one source, UT+9; from 1908, (one source,1927), to year's end '29, was UT+8:30. Then, under Japanese rule, UT+9.
History: in 1904, the railway firm there introduced Japan Time, then UT+8.30, setting aside the older Seoul Time of UT+8.28, and in 1908 this became official. in Mar 1954, South Korea adopted UT+8; around Aug 1961, UT+8:30 & no DST; 1968, UT+9).
DST: Under US occupation, '48-'51, South Korea and Japan had DST, - only South Korea has tried it at all since then [historic DST].

China is UT+8, - though a local time is used, UT+6, in Xinjiang by local dispensations, for the Uighur Autonom. Republic, parts also of Tibet.
(Formerly, from 1912 to 1949, China had 5 timezones - +5.30, +6, +7 (Kansu-Szechuan), +8 & +8.30 - insofar as the Gregorian calendar was used in the south of the country. Gregorian was officially adopted throughout, effective January 1, 1929, and these time zones were ratified in 1939 by Executive Yuan. But parts under Japanese rule 1938 -'45, UT+9. Parts under French rule (Guangzhouhuan) to '42, UT+7.
From 1949, all China used UT+8, formally agreed on May 1st 1980).
DST is not used currently anywhere, but see [historic DST]

Mongolia also UT+8 [historic DST].

Macao has used UT+8 since 1949 [historic DST]. Taiwan also uses UT+8, [historic DST].

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South-east Asia
Burma/Myanmar is 6.30hrs fast of UT, (UT+9 1942 -'45, but UT+6.30 in Oct 1960).

Cambodia, Thailand, Laos, Vietnam are now UT+7. (As French Indo-China, UT+7 was promoted from 1906, for the region. From Jan 1 1943, UT+8, moving with Vichy's hour-advance; becoming UT+9 where Japan directed affairs, 14 Mar '45 to 2 Sept '45. Reverting UT+7 until Communist Insurgencies, which each declared for UT+8, consistent with China; may have adopted UT+7 in the '60s.

• I gather in 1912, Cambodia adopted UT+8 until 30 Apr '31; after Japanese brought in UT+9, Aug '41 to Aug '45, Communist-held areas took UT+8 up again 1946, - I don't know when UT+7 returned.
• Thailand was not militarily held by the Japanese - no more info.
• Laos, UT+9 in WW2 with Japanese, then UT+7 from Aug '45 to date.
• Vietnam switched around a lot until The Unification 13 Jun 1975: first, Hanoi (N.) made UT+8 the timezone for those parts under attack; meanwhile, Saigon (S.) adopted UT+8 from '47 to Jun 1955 - they reverted, then changed back 1 Jan 1960 to UT+8. At the Fall of Saigon in 1975, all became UT+7.)

DST is not used currently anywhere.


Singapore [historic DST] and Western Malaya [historic DST] have been on UT+8 since 6am 1 Jan 1982 - (pre-1901 Malaya, lmt; pre-WW2 Malaya, UT+7 until DST '32 of 20 mins all-year-round; in Feb 1942-5, on UT+9; post-war to 1982, UT+7.30);
(Singapore post-1880, UT+6.55'. in 1936, on UT+7.20, Sep'41 UT+7.30; from Feb 1942-5, all on UT+9; post-war to 1981, UT+7.30.)
Eastern Malaysia (North Borneo, Sabah) has used UT+8 since 16 Sept, 1963 (ASEAN Common Time). - (1933 to 15 Feb '42, then called Sabah and Sarawak, UT+7.30; 1942 to 12 Sep '45, UT+9; 1945 to 16 Sep '63, UT+7.30)

DST is not used currently anywhere.

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Australia has three zones, UT+8 in Western Australia, +9.30 in Northern Territory and South Australia, and +10hrs for Victoria, Queensland, Tasmania and N.S.W. - (In Oct 1960, Broken Hill area in NSW kept UT+9.30).
Prior to the Acts of Federation of what were, in effect, autonomous colonies, with each its own time, adjustments were made:

• Adelaide (South Australia) moved its clocks back by 14 mins 20secs, am Jan 1, 1895 to UT+9
• The Eastern colonies stepped their clocks back from UT+10.30 to UT+10, on the midnight between 30 Apr & 1 May, 1899, while South Australia adopted UT+9.30.

Only South Australia, Lord Howe Island and N.S.W. now have DST, from October through to April in the following year; Western Austalia stopped in 2009. Daylight Saving Time begins at 2am on the first Sunday in October, when clocks are put forward one hour. It ends at 2am (which is 3am Daylight Saving Time) on the first Sunday in April, when clocks are put back one hour. [Southern hemisphere DST].

New Zealand now is 12 hours fast of UT. It has DST from October to April of the following year, and has observed it nearly ninety years.
On 2 Nov 1868, New Zealand standard time was introduced nationally, at 11½ hours ahead of Greenwich Mean Time (or UT+11:30). This standard was known as New Zealand Mean Time (NZMT).
In 1941, during the Second World War, clocks were advanced half an hour, making New Zealand 12 hours ahead of UT. This change was made permanent from 1946 by the Standard Time Act 1945. [Southern hemisphere DST].
The Chatham Islands are 45 minutes .ahead of NZST.
Tokelau & Independent Samoa has kept NZ time (UT+12) since 2009, or 2011; West Samoa adopted UT+13, but since 2011, UT+12. - (in Oct 1960, all Samoa was UT+11).

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Indonesia, Philippines, & the west Pacific Islands: The Philippines [historic DST], also Brunei, Central Indonesia (Sulawesi, Lesser Sunda Isl., most of Kalimantan), and the Celebes are all said to be UT+8 (ASEAN Common Time), no DST.
(Philippines UT+8, from 11 May 1899; Brunei was UT+7.30 from 1926 to 1932.).
(Philippines, & Sulawesi, Sunda Isl., Kalimantan, under Japanese control, adopted UT+9 (JST) from midnight, 1 May, 1942, to midnight, 1 Nov, '45... thereafter until rationalisation, Sulawesi used UT+8, Kalimantan UT+7.30, Sunda Isles - no info ).

Java (Jakarta) and Western Indonesia now use UT+7, no DST.
(In 1924, Jakarta adopted UTC+7:20h, on Jan 1, abandoning lmt.
.. in 1932, adopted 7:30hrs.
Under Japanese control, on 23 Mar 1942 they adopted UTC+9h until 23 Sep '45.)
In 1948, 1 May, presumably for all Indonesia, new government adopted UT+8. From 1950, UT+7:30 was re-adopted for Java (which includes Jakarta); then 7h adopted in 1964, 1 Jun.

Eastern Indonesia (Ambon, Papua) today use UT+9, no DST.
(The Molucca Isles and Ambon used UT+8.30 until 1964; Papua in New Guinea used UT+9).

(As a snapshot of the post-war diversity, in Oct 1960 Indonesia as an whole still had, in total, six zones:

• UT+6.30, Mentawai Is., Nias, N. Sumatra
• UT+7, Anambas Is., Bangka, Blintong, Natuna Is., Rhio Is., S.Sumatra
• UT+7.30, Bali, Borneo, Java, Lombok, Madura
• UT+8, Alor, Celebes, Flores, Lomblem, Pantar, Roti, Sanghi Isl., Savu, Sumba, Sumbawa, Talaur Isl., Timor
• UT+8.30, Babar Is., Moluccas, Sula Is., Wetta
• UT+9, Aru Is., Kei Is.,Tanimbar Isl., Dutch New Guinea)

Papua New Guinea - the eastern side of the island, is UT+10, along with Micronesia, Guam. (In Oct 1960, British New Guinea was on UT+10).
the Indonesian side is UT+9 as indicated above, as is Palau island and East Timor. (In Oct 1960, Dutch New Guinea was on UT+9.30).

Others - currently, The Marshall Islands, Fiji [Southern hemisphere DST], Tuvalu, Kiribati (west) and Gilbert Is. are also UT+12. Apart from Fiji (see above), none of these seem to have summertimes.

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Mid-Pacific Extra. French Polynesia is UT-10, alleged also the the Society Isles, Austral Isles., Tuamotu.
Pitcairn Island is UT-9, (like Alaska nowadays), the Isles Marquises (Marquesas) UT-9.30 (Oct 1960, UT-10).
The Line Islands of Kiribati, although nearby, observe UT+14 time, so they can claim to be in a new day before all others; similar is Tokelau, which is at UT+12 since 2011.
Tonga is UT+13, (In Oct 1960, was UT+12.20). Independent Samoa (i.e. Apia, not American Samoa), uses UT+12, since 2011. (UT-11 from 1960 till then); it adopted DST in 2010 [Southern hemisphere DST].
Midway Island UT+11, (in Oct 1960, was UT+11).   Hawaii UT-10.

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In South America, the east of the continent (but not including ex-British Guyana/Guiana), is UT-3; that is:

• Brazil (eastern, and all of its coast), called 'Brasilia Time', where 94% of population.
• French Guyana/Guiana (in Oct 1960, was UT-4)
• Suriname (ex-Dutch Guyana/Guiana) (in Oct 1960, was UT-3.30)
• Uruguay and Argentina.

Of these, DST is in effect in southern Brazil (Rio, Sao Paolo), [Southern hemisphere DST] and Uruguay [Southern hemisphere DST]. In Argentina it has lapsed [historic Southern hemisphere DST], although San Luis province uses UT-4 in the southern hemisphere winter.

At UT-4 are:

• Brasil-Amazon (e.g. Manaus), Mato Grosso, Mato Grosso do Sul, Rondônia, Roraima (In Oct 1960, Brazil's westernmost province was on UT-5).
• Guyana (ex-British), (in Oct 1960, was UT-3.45)
• Bolivia
• Paraguay (switching from UT-3hr 50' on Oct 10, 1931) [Southern hemisphere DST]
• Chile (1894, was UT-4:46; in 1910, UT-5; 1916, UT-4:43; then 10 sep 1918, UT-4), [Southern hemisphere DST]

At UT-5 (again) is a bit of Brazil:

• Since 2013, the entire state of Acre and the southwestern portion of the state of Amazonas (Brasilia Time minus 2): the zone had been abolished in June 2008.

The Falkland Isl./Malvinas are UT-4, and have sometimes had DST from September through to April the following year. [Southern hemisphere DST].

In the west of the continent, Columbia, Ecuador, Cuba and Peru are UT-5. All no DST.

Venezuela was 4.30 hours behind UT, no DST; the odd 30 minutes were lost by a TZ change 1 May 2016, making Venezuela UT-4.

Easter Isl. (Chilean), and Galapagos Isl. (west of Ecuador) are UT-6.

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Minus, or Plus? Be aware that the opposite sign must be put in Astrolog's TimeZone box from those actual time-shifts listed above (and you don't ever need to put the 'plus' for a westing)

   * Southern Ireland/Eire is anomalous; whereas standard times across the EU are used in winter, in Eire/Southern Ireland, the Irish Standard Time (IST) is in operation through the summer, and is UT+1; Irish Winter Time (IWT) is UT; so the end-result is that Ireland matches the UK's time, follows EU starts and ends, and can claim to be in the UT+1 fold.
But Astrolog cannot adapt to a perverse DST - in practice, advise use British Time.

Some Sources

https://en.wikipedia.org/wiki/List_of_time_zones_by_country; astroccult.net/timezones.html; worldtimezones.net; UK's Nautical Almanack; en.wikipedia.org/wiki/Time_in_Russia; timeanddate.com; horlogeparlante.com

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- DST by COUNTRY, ALPHABETICALLY -

The use of DST, 'moving clocks forward and back each summer', came out of a world war, in 1916, - Russia and a few other countries adopted in 1917, the United States adopted DST 1918, almost all till shortly after the war's end. But Belgium, Gibraltar, Ireland, Luxembourg, Netherlands, New Zealand, and the United Kingdom carried on; France re-adopted 1925; and Argentina, Brazil, Chile and Romania were other consistent adopters, starting DST in the '30s.   It came in widely in WW2, and again in the Eighties.
DST has been, for some countries, full of alterations, exemptions and revocation, while most sub-tropical countries, having 'two summers', have no use for it. Many countries don't get a mention, as they have never used DST.

NOTE: In almost all cases, changes are a one-hour advance. The exceptions
I know of, Dominican Republic, New Zealand and Malaya, expressly cited.

NOTE: The European Union and other countries embracing their DST dates are now standardised on: Start: Last Sunday in March at 1 am UTC; End: Last Sunday in October at 1 am UTC. Before 1996, End: Last Sunday in September at 1 am UTC.

Choose nearest country alphabetically:
[Albania - Bulgaria]     [Canada - Dominican Rep.]     [Eire - Finland]     [France - Israel]     [Italy - Mauritius]
[Mexico - Namibia]     [Netherlands - Russia]     [Samoa - Ukraine]     [UK - USSR]     [resources]

Albania
First use of DST..

1940, 16 jun unbroken using UT+2, through to 2 nov '42
1943, 29 March, 2am, to 10 April, 3am

Since 1974, around first Saturday in May, to around start of October.

From 1984, starts and finishes as E.U. agreement though not a member, and still using UT+2 as basetime today. [en.wikip][timeanddate.com]
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Algeria
1850 — 1900 Algiers time. UT+0:12:12 ; 1900 — 1910 Paris time UT+0:09:21
1911, Adopted UT.
1916 DST began, used thro' to 1921 inclusive. 1922, DST lapsed.

1939: DST, 11 Sep - 19 Nov; 1940: (25 Feb moved to UT+1), DST lapsed..

1944: 3 Apr - 8 Oct
1945: 2 Apr - 16 Sep
1946: revert to UT on 7 Oct.; no DST..

1956: re-adopt UT+1 on 29 Jan.; no DST..

1963: re-adopted UT on 14 Apr; no DST..

1971: DST, 25 Apr - 27 Sep

1977: DST, 6 May- 21 Oct (...on 27 Oct, re-adopt UT+1)
1978: DST, 24 Mar - 22 Sep
1979: (..on 26 Oct, re-adopt UT)
1980: 25 Apr - 31 Oct
DST abandoned to date.
[horlogeparlante.com][timeanddate.com]
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Andorra

DST was first used Mar 31, 1985, adopting the EU DST agreement.
Still in use, 2am forward, 3am back. [en.wikip]
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Argentina
In 1920 and from 1930 to 1969, there was DST, switching to UT-3 from the base-time UT-4 each southern hemisphere summer.

DST was tried again, 23 Jan 1974 till 1 May 1974, but going each southern hemisphere summer to UT-2, reverting following May to UT-3.

DST was re-adopted 30 Nov 1988, each southern hemisphere summer, till ending 6 Mar 1993.

From 30 Dec 2007, DST ran to 15 mar 2008; & now, and from 2008, DST due to begin third Sunday of October, ending second Sunday in March of the following year, but exemptions allowed for the provinces of Catamarca, La Rioja, Mendoza, Salta, Tucumán, Santiago del Estero, San Juan, La Pampa, Jujuy, Neuquen, Rio Black, Chubut, Santa Cruz and Tierra del Fuego, Antarctica and South Atlantic Islands.
San Luis uses UT-4 for winter, UT-3 for summer.
One report that DST lapsed, 2009. [en.wikip]
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Armenia
observed DST of UT+4 in 1980, all year; thereafter, last Sun Mar, to last Sun Oct, 1981 to 1984, - but according to one source, 1 Apr - 1 Oct,

1985, as EU starts and finishes until 1991, at which point they adopted UT+3 without DST, by not switching in Spring.

DST again from 1992 to 1994; in 1995, after 25 Mar, UT+4 did not end till 29 Mar '97, when the DST of UT+5 was brought back, last Sun Mar, to last Sun Oct., as before.
Three sources say they have no DST since 2011, and have re-adopted UT+3 Timezone. [en.wikip & others]
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Australia
In compliance with an Empire-wide order, the first year DST was used in Australia was 1917, running 1 Jan to 25 Mar through the southern hemisphere summer. It was discontinued thereafter, but World War II saw its return for three consecutive summers, beginning with a late summer start on 1 Jan 1942, followed by two full summers running from Sept (of the one year..) to Mar (of the next).
Meanwhile the Tasmanian government implemented Daylight Savings in summer of 1967, to save power and water. As it turned out, they liked having DST in Tasmania so much that they have continued it ever since; and pushed to get DST used Australia-wide.

1971 saw Australia's first peace-time DST enactment.
Northern Territory, Queensland declined it. The Federal Government kept it the responsibility of individual state and territory governments to decide when and if DST could be implemented locally, e.g.
NSW extended DST in 1981-2 because of power shortages...and during the Sydney 2000 Olympic Games special Daylight Savings Times were observed by some, but not all of NSW.
But on 12 April 2007, New South Wales, Victoria, Tasmania and the Australian Capital Territory agreed to common starting and finishing dates for DST, viz: first Sun, Oct through to first Sun, April the year following.
Western Australia continued with their former last Sun Oct to last Sun, Mar policy to 2008, and rescinded DST law. So DST is not now observed in Queensland, the Northern Territory nor Western Australia.
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Austria
took up DST in 1916, choosing Monday mornings for the switchover, like Germany - early Apr to early Sep.. One source says it abandoned DST for 1919, two days before planned May 3 beginning. In 1920 Austria tried it for a last time, proceeding as planned in Salzburg, but quashed elsewhere.
1916: (with Germany), 30 Apr 11pm, to 1 Oct 1am.
1917: ( " ) 16 Apr, 2am, to 17 Sep., 3am.
1918: ( " ) 15 Apr, 2am, to 16 Sep., 3am.
1919: no DST.
1920: Start 5th April: revoked (by Salzburg Parliament on 28th), on 1 May. Elsewhere (i.e Austrian railways), 5 Apr at 2am., to 13 Sep at 3am.
After that DST lapsed until, with Anschluss, they followed Berlin's DST hour-advances.


1940: 1 Apr, at 2:am adopted UT+2 as DST until...
1942, ...2 Nov, 3am reverted to UTC+1. (i.e. Monday to Monday)
1943: 29 Mar, to 4 Oct
1944: 27 Mar, to 2 Oct
1945: 2 Apr, 2am in Wien ; 12 Apr elsewhere 23 Apr. - 1 Oct am..
After DST being abbreviated during 1945, (the war's end), DST went on a few years..
1946: (with Germany) 14 Apr 2am - 7 Oct 3am
1947: (with Germany) 13 April 2am - 5 Oct 3am
1948: 18 Apr 2am - 3 Oct 3am
Then DST lapsed.

1980 6 Apr midnight - 27 Sep midnight

1981 – 1995 last Sun, Mar 2:00am -last Sun, Sept 3:00am
1996 – 2016 last Sun, Mar 2:00am -last Sun, Oct 3:00am
[http://de.wikipedia.org/wiki/Liste_der_Sommerzeiten]
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Azerbaijan
observed DST in 1981 — 92 and since 1996.

End March to End October. Nagorno-Karabakh district abolished it 2012. [en.wikip]
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Bahamas
has observed DST since 1964. [en.wikip]
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Bangla Desh
had DST in 1977 — '80 (one source)..., & observed DST in 2009 for a year alone, according to [en.wikip]
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Barbados
had DST in 1977 — '80. [en.wikip]
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Belarus

first had DST 28 Jun '41 yearly to 3 Jul '44, during occupation, on German basetime UT+1 TZ.


Took it up again 1981, carried it through the abandoning of UT+3 for UT+2 in '98, ending it 27 Mar '11, by making that UT+3 summertime their year-round time, with no DST going forward.. [en.wikip]
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Belgium
From summer 1918, DST came in but on irregular Saturday start-dates (Mar, Apr), but ending 23hrs, first Sat in Oct., and it remained between the two world wars (Belgium used UT then).
During that time, a decree (Sept 15, 1928) declared that DST each year should start on the night of the 2nd or 3rd weekend of Apr., at 2am, ending on the night of the 1st weekend of Oct. at 3am...

Under occupation, with German-mandated UT+1 basetime in use, DST was UT+2, from 25 feb '40 to 1946, and ran right through two winters
1940: 1 Apr, at 2:am adopted UT+2 as DST until...
1942: ...2 Nov, 3am reverted to UTC+1. (i.e. Monday to Monday)
1943: 29 Mar, to 4 Oct
1944: 27 Mar, to 2 Oct
1945: 2 Apr, - no info
1946, last DST, 1am 19 May - 1am 7 Oct.
After the war, Belgium remained on UT+1, but no DST until '77.

Since 1977, first Sun Apr - last Sun, Sept.(or, in '78, first Sun Oct).

Since spring 1981, Belgium's DST starts and finishes have conformed to E.U. DST.
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Belize
had DST in 1931-'32. [en.wikip]
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Bermuda
has a long DST, from early March to early November.
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Bosnia

18 Apr, 1941 - DST at UT+2 through until
1942, 2 Nov, 3am reverted UTC+1. (i.e. Monday to Monday) 1943, 29 Mar, to 4 Oct
1944, 27 Mar, to 2 Oct
1945, 8 May , to 16 Sept


DST resumed on 27 Mar 1983 - like the E.C., last Sun Mar to last Sun Sept, ; and from 1996, ending it last Sun Oct, as EU generally.
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Brazil
Currently DST is mid Oct to mid/end Feb. the following year, i.e. Southern Hemisphere DST, in those regions in the (mostly) south where DST operates (Regiões Sul, Sudeste, Centro-Oeste).
Aside from a 1931-'33 3rd Oct to end Mar. pan-Brasilian experiment, and another 1985 — '88, end Oct. to Feb. or Mar., DST since 1988 has been used chiefly in southern parts of the country, excluding, in the far north, Tocantins, and from mid-93, Amapa; and in the north-east, Bahia, which from mid-'91, has been without DST, although during the 2011-12 summer, Bahia also observed daylight saving time as an experiment.
Also, in the 2012-13 summer, the Northern state of Tocantins observed it, also as a test, for the first time since the state was created in 1988.
Starting from the 2013-14 summer, neither state will observe DST any more.

After 1988 Southern-hemisphere DST has continued as before in the following southern provinces: the Rio Grande do Sul, Santa Catarina, Paraná, São Paulo, Rio de Janeiro, Espírito Santo, (and since 2003, Minas Gerais, Goiás, Mato Grosso, Mato Grosso do Sul and Distrito Federal.)

DST START ->>	END	DST START ->>	END	DST START ->>	END
1931 * 0:00, 3 oct	1932 24:00 31 mar	1986 0:00, 25 oct	1987 0:00, 14 feb	2001 0:00, 14 oct	2002 0:00, 17 feb
1932 * 0:00, 3 oct	1933 24:00, 31 mar	1987 0:00, 25 oct	1988 0:00, 7 feb	2002 0:00, 3 nov	2003 0:00, 16 feb
	INTERVAL	1988 0:00, 16 oct	1989 0:00, 29 jan	2003 0:00, 19 oct	2004 0:00, 15 feb
1949 * 0:00, 1 dec	1950 0:00, 30 apr	1989 0:00, 15 oct	1990 0:00, 11 feb	2004 0:00, 2 nov	2005 0:00, 20 feb
1950 * 0:00, 1 dec	1951 0:00, 31 mar	1990 0:00, 21 oct	1991 0:00, 17 feb	2005 0:00, 16 oct	2006 0:00, 19 feb
1951 * 0:00, 1 dec	1952 0:00, 31 mar	1991 0:00, 20 oct	1992 0:00, 9 feb	2006 0:00, 5 nov	2007 0:00, 25 feb
1952 * 0:00, 1 dec	1953 0:00, 28 feb	1992 0:00, 25 oct	1993 0:00, 31 jan	2007 0:00, 14 oct	2008 0:00, 17 feb
	INTERVAL	1993 0:00, 17 oct	1994 0:00, 20 feb	2008 0:00, 19 oct	2009 0:00, 15 feb
1963 * 0:00, 9 dec!	1964 0:00, 1 mar!	1994 0:00, 16 oct	1995 0:00, 19 feb	2009 0:00, 18 oct	2010 0:00, 21 feb
1965 * 0:00, 31 jan-	1965 0:00, -31 mar	1995 0:00, 15 oct	1996 0:00, 11 feb	2010 0:00, 17 oct	2011 0:00, 20 feb
1965 * 0:00, 30 nov	1966 0:00, 31 mar	1996 0:00, 6 oct	1997 0:00, 16 feb	2011 0:00, 16 oct	2012 0:00, 26 feb
1966 * 0:00, 1 nov	1967 0:00, 1 mar	1997 0:00, 6 oct	1998 0:00, 15 feb	2012 0:00, 21 oct	2013 0:00, 17 feb
1967 * 0:00, 1 nov	1968 0:00, 1 mar	1998 0:00, 11 oct	1999 0:00, 21 feb	2013 0:00, 20 oct	2014 0:00, 16 feb
	INTERVAL	1999 0:00, 3 oct	2000 0:00, 27 feb	2014 0:00, 19 oct	2015 0:00, 22 feb
1985 0:00, 2 nov	1986 0:00, 15 mar	2000 0:00, 8 oct	2001 0:00, 18 feb	2015 0:00, 18 oct	2016 0:00, 21 feb

NOTE 1: ! but in S.E.states, DST was 23 oct - 29 feb.   NOTE 2: * marks years when DST involved whole country.
NOTE 3: between 1988 & 90, just the North region rejected DST; thereafter North and North East rejected.
NOTE 4: From '91 to '04, Bahia (in North East) took up DST from time to time... likewise Tocontins (in North).

Since 2008 the DST always starts on the third Sunday in October and always ends on the third Sunday in February, unless it coincides with carnival, where then the DST extended by one week.
The following areas certainly have no DST:
Amazonas, Pernambuco, Sergipe, Para, Paraíba, Ceará, Amapá, Alagoas, Rondônia, Rio Grande do Norte, Piauí, Maranhão, Acre, Roraima, much of Mato Grosso.
[pt.wikipedia.org/wiki/Wikipédia...various pages]
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Bulgaria
used DST in 1932 and 1939 on UT+2 basetime:
1932: 21 May -2 Oct

1939: 2 Apr -1 Oct


1942, 2 Nov, 03:00, changed TZ to UT+1
1943, 29 Mar, 02:00 - Mon, 4 Oct, 03:00
1944, 3 Apr, 02:00 - Mon, 2 Oct, 03:00
1945, 2 Apr, 03:00...to UT+2, and DST then abandoned.

1979: 27 May - 1 Oct, as DST resumed

...and on to currently, DST in step with EU starts and finishes, on UT+2 basetime. [en.wikip]
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Canada
Six Canadian cities, by local ordinance, used DST before 1918: Brandon, Manitoba and Winnipeg (already in 1916), also Halifax, Hamilton, Ontario, Montreal, St. John's, Newfoundland and Labrador.
Subsequently, Edmonton had DST in 1918, and it ran mid-Apr to late Oct, in 1919 mid-Apr to 27 May, in 1920 late Apr to September, through to 1923, when on Sept 30 DST was abandoned till 1942, in the war.
From 1942 to 30 Sep 1945, Daylight-Saving-Time ran all year round, each zone advanced one hour from standard; no DST in 1946; in 1947 DST ran for that year only.
After an interval, in 1967, DST ran for that year only, 30 Apr to 29 Oct.
NOTE: At some point, Saskatchewan voted, for the greater part, not to use DST, and this still holds.

Since 1969, DST across Canada has more or less followed the U.S.: when the United States extended DST in 1987 to the first Sunday in April, all DST-observing Canadian provinces followed suit.
So, before the 2005 US 'Energy Policy Act' act, Canada observed DST from the first Sunday in Apr. until the last Sunday in Oct.. The latest United States change of 2005, adding parts of March and November, was adopted by Canadian provinces and territories as follows:
Ontario, Manitoba - October 20, 2005
Quebec - December 5, 2005
Prince Edward Island - December 6, 2005
New Brunswick - December 23, 2005
Alberta - February 2, 2006
Northwest Territories - March 4, 2006
British Columbia - March 31, 2006
Nova Scotia - April 25, 2006
Yukon - July 14, 2006
Newfoundland - November 20, 2006, but officially announced on January 18, 2007 Nunavut - February 19, 2007

Currently, in most of Canada, DST begins at 2:00 a.m. local time on the second Sunday in Mar.; ends on the first Sunday in Nov., when areas return to their Standard Time at 2:00 a.m..
Areas of Canada not using DST are many: they include Fort St. John, Charlie Lake, Taylor and Dawson Creek in British Columbia, Creston in the East Kootenays, and most of Saskatchewan, except Denare Beach and Creighton. And in Ontario, Pickle Lake, Atikokan, and New Osnaburgh.
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Chad
had DST in 1979-'80. [en.wikip]
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Chechnya
1930 — 1979:No DST, UTC +3 zone

1981: Wed, 1 Apr, 00:00 - Thu, 1 Oct, 00:00
1982: Thu, 1 Apr, 00:00 - Fri, 1 Oct, 00:00
1983: Fri, 1 Apr, 00:00 - Sat, 1 Oct, 00:00
1984: Sun, 1 Apr, 00:00 - Sun, 30 Sep, 03:00

1985: Sun, 31 Mar, 02:00 - Sun, Sep, 03:00 .. & so on, till...
1991: Sun, 31 Mar, 02:00, No offset (TZ change); Sun, 29 Sep, 03:00, back to UT+2
1992: Sun, 19 Jan, 02:00, No offset (TZ change) - revert to UTC+3h.; then.. DST Sat, 28 Mar, 23:00 - Sat, 26 Sep, 23:00
1993: Sun, 28 Mar, 02:00 - Sun, 26 Sep, 03:00
...and similarly, to
1994 , Sun, 31 Mar, 02:00 - Sun, 27 Oct, 03:00
...and similarly, to
2010, Sun, 28 Mar, 02:00 - Sun, 31 Oct, 03:00
2011, Sun, 27 Mar, 02:00 (TZ change) to UTC+4
DST lapsed.

2014, Sun, 26 Oct, 02:00, (TZ change) to UT+3. [timeanddate.com]
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Chile
Chile used DST since summer 1927. At that time, the country was divided into two zones. The latest law of 2008 applied to the whole country and provided that summer time started midnight, last Saturday, October and ended midnight, second Saturday of March. In some years, the DST was adjusted for political or climatic reasons, e.g. 2012, 2nd Sep - 29 Apr..
Historical exceptions:

• In 1987 the time change to daylight saving time on Saturday was postponed until April 11 due to the visit of Pope John Paul II.
• In 1988, DST began a week earlier in order to have more light for the National Plebiscite of October 5.
• In 1990, the winter schedule was postponed until 17 March as Patricio Aylwin began his presidency on March 11.
• In 1990, the start of daylight saving was held on September 15, in order to save energy due to unfavorable hydrological conditions.
• In 1997, the start of the official time was on March 29 to meet adverse hydrological conditions.
• In 2008 the return to standard time was delayed three weeks due to a severe drought that hit the country.
• In 2010, due to the earthquake that rocked the country, the winter schedule began at 00:00 on April 4, (Easter Island at 20:00 the previous day).
• In 2011 the government postponed the time change in the expectation of a dry year. After a first extension of DST for the entire month of March, the change of official time was scheduled for 7 may 24:00, and Easter Island at 22:00. Ended 19 aug.
• In 2012 the government decided to keep the plan implemented in 2011 starting 28 apr, 24:00, and Easter Island at 22:00. Ended sep.

DST lapsed in Chile Jan 2015.
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China
Beginning May 3rd, 1986 (00:01am: subsequent years, from mid-May to mid-Sep, and continuing to 1991), a trial of DST went on, which was then abandoned.
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Costa Rica
had Northern-hemisphere DST in 1954 (24 Jan to 6 Jun); tried again, 1979 and '80 (25 Feb - 3 Jun; 24 Feb - 1 Jun), and 1991 and '92 (19 Jan - 1 Jul; 18 Jan - 15 Mar). Came in and ended at midnight:start of the day.
Abandoned after 1992. [en.wikip]
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Croatia
firat adopted DST under German occupation 1941

1941, 18 Apr, - to 1942, 2 Nov.
1943, 29 Mar - 4 Oct.
1944, 3 Apr - 2 Oct.
1945, 8 May - 16 Sep; DST then lapsed.


DST resumed 1983, last Sun in Mar to last Sun in Sept.; after 1995, Last Sun in Oct. [timeanddate.com]
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Cuba
has had DST since 1965 Mar to Oct., and tried continuous summer-time (1 hour advance) from March 27, 2004 to October 29, 2006.
There were trials, in 1928, 1940-42, 1945-46. [en.wikip]
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Cyprus
uses UT+2 timezone, and has had DST since 1975, idiosyncratically at first:
1975: 13 Apr 00:00 - 12 Oct 00:00
1976: 15 May 00:00 - 11 Oct 00:00
1977: 3 Apr 00:00 - 25 Sep 00:00
1978: 2 Apr 00:00 - 2 Oct 00:00
... and so on, Sunday to Sunday to present date.

1981, adopted end on last Sun Sept; 1996 onward, on last Sun Oct. [timeanddate.com] [en.wikip]
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Czech Rep.
In the first World War, there was DST in the summers, 1916-'18


1940, from 1 Apr, continuous DST to 1942, 2 Nov.; then in each summer, under Germany and then the U.S.S.R., until 1949:
1943: 29 Mar, 2am - 4 Oct, 3am
1944: 3 Apr 2am- 17 Sep 3am
1945: 8 Apr 2am - 18 Nov 3am
1946: 6 May 2am - 6 Oct 3am
1947: 20 Apr 2am - 5 Oct 3am
1948: 18 Apr 2am - 3 Oct 3am
1949: 9 Apr 2am - 2 Oct 3am
DST abandoned - no changes, though, to their long-term timezone of UT+1.

The republic has had DST since 1979 when still Czechoslovakia.

Since 1996, last Sunday in Mar. - last Sunday in Oct., up to today. [en.wikip]
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Denmark
observed DST 1916, 14 May, 23:00 - 30 September, 23:00.

come WW2...
1940: Wed, 15 May, 00:00 - No DST End...
1941: DST observed all year
1942: No DST Start - Mon, 2 Nov, 03:00
1943: Mon, 29 March, 02:00 - Mon, 4 Oct, 03:00
1944: Mon, 3 April, 02:00 - Mon, 2 Oct, 03:00
1945: Mon, 2 April, 02:00 - Wed, 15 Aug, 03:00
1946: Wed, 1 May, 02:00 - Sun, 1 Sept, 03:00
1947: Sun, 4 May, 02:00 - Sun, 10 Aug, 03:00
1948: Sun, 9 May, 02:00 - Sun, 8 Aug, 03:00
1949: DST lapsed.

1980: Sunday, 6 April, 02:00 - Sunday, 28 Sept, 03:00

1981: Sun, 29 March, 2am - Sun, 27 Sept, 3am
  i.e., .. last Sunday in Mar, to last Sunday in Sep., until in..
1996: Sun, 31 March, 02:00 - Sun, 27 Oct, 03:00
and continued, conformable to E.U. directive.
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Dominican Republic: it adopted an hour Southern Hemisphere advance:
1966: 30 oct., to 28 Feb 67.

.. adopted a 30 minute Southern Hemisphere advance:
1969: 26 Oct., ending '70, 21 Feb
1970: 25 Oct., ending '71, 20 Jan
similarly, until 21 Jan '74:-
They adopted permanent advance of one hour on basetime, UT-5 to UT-4, on 27 Oct. DST lapsed.
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Eire/ S. Ireland
Ireland followed Britain's starts and finishes of DST during 1916-18, (during 1916, all-Ireland Time was UT-0hrs 25mins, an old arrangement which was ended when DST did on 1 Oct that year); after independence in 1921, DST was brought in as a trial in 1924 or '25, then made permanent in 1926, continuing with it irrespective of the UK's WW2 'Wartime' alterations.
While I don't know if British starts and finishes were replicated in Ireland, I speculate that during neutrality in WW2, between mid-1939 and 1945, starts were:
between 9th and 20th, in each April.
and finishes were:
1939: 1 Oct. --- 1940: 6 Oct. --- 1941: 5 Oct. --- 1942: 4 Oct. --- 1943: 3 Oct. --- 1944: 1st Oct. --- 1945: 7 Oct.

The UK's 1968-71 pilot for permanent UT+1 was copied, and ended 1971, as UK.
By Eire's 1971 Act that followed, a feature of Irish Time is that Irish Standard Time is UT+1, and applies in the summer. UT is used in the winter, called Irish Winter Time - so the effect is to exactly parallel UK's timeshifts - but Astrolog's DST forward-shift cannot make Eire's backward DST adjustments for you, you can only set Eire's TZ to UT, and work it as United Kingdom's summer-shifts. Link here for UK's DST starts and finishes, which may match Irish dates for all years barring during World War 2.
Ireland has not ratified the EU dates of starts and finishes.
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Egypt
used DST, a 1 hr advance from UT+2 to UT+3, beginning 1940 under a British Protectorate:
1940: 14 Jul 10pm - 30 Sep 9pm
1941: 14 Apr 10pm - 15 Sep 9pm
1942: 31 Mar 10pm - 26 Oct 9pm
1943: 31 Mar 10pm - 31 Oct 9pm
1944: 31 Mar 10pm - 31 Oct 9pm
1945: 15 Apr 10pm - 31 Oct 9pm (UT + 2)
DST lapsed post-war.

An independent Egypt re-introduced DST 1957, starting it evening 9 May, - 30 Sept; in '58, chose 30 Apr, 22.00 - 30 Sept, 22.00
the start day was, in 1959, permanently moved to 1 may, 1 am; the ending, end 30 sep at 3am. It seems this was not held to, preferring to change on Saturday mornings. In '66, the 1st Oct was the notional end day.
In 1995, it changed to: last Thursday in Apr, to last Thursday in Sept.
DST dropped 30 sep 2010.

the government is resolved to re-introduce it 30 May 2014.
Be aware that during Ramadan, it may be temporarily suspended, as in fact it was 2010, 10 Aug - 9 Sept.
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Estonia
had DST in 1918, 15 Apr - 16 Sep.
1919: 1 Jul, went back to LMT. 1921: 1 May, adopted UT+2.

Overrun by Germany 1941, Latvia's brief spell of UT+3 under Soviet control (1940, 6 Aug - 15 Sep) was abandoned for UT+1 with DST in that spring, to match Axis UT+1.

1942: DST ended 2 Nov
1943: 29 Mar - 4 Oct
1944: 3 Apr, - 12 Oct .; then under Russians again, UT+3 re-instated, DST lapsed until 1980.

DST added all year 1980.
1 Apr starts and 1 Oct finishes since 1981, mid '84 DST was converged as a part of the EU, to:

last Sun Mar - last Sun Sep.
They adopted UT+2 basetime on 26 Mar, 1989, but stayed with DST.
1996, adopted DST ends in October. [en.wikip]
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Europe : the E.U., bar Iceland, and other countries
  embracing E.U. DST, have adopted, since 1996:  
  Start: Last Sunday in March at 1 am UTC;      
  End: Last Sunday in October at 1 am UTC.     


Falkland Islands
has had Southern hemisphere DST intermittently:
1937: DST start 26 Sep
1938: end 20 Mar; start, 25 Sep
1939: end 19 Mar; start, 1 Oct
1940: end 24 Mar; start, 29 Sep
1941: end 23 Mar; start, 28 Sep
1942: TZ change 1 Jan; DST lapsed.

1983: start 25 Sep
1984: end 29 Apr; 16 Sep start - maintained to
2007: 15 Apr. set back until start 2 Sep
2008: end 20 Apr; start 7 Sep
2009: end 19 Apr. Shift forward 6 Sep
Since then, advanced its clocks by one hour in 2011, but has had no DST. [en.wikip]
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Fiji
has observed Southern hemisphere DST 1998 - 2000 and since 2009, for only seven to nine weeks each 'summer'; variably, as - start Nov to end in Feb of the following year. [en.wikip]
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Finland
first had DST in 1942:
Friday, 3 April - Sunday, 4 October - for that year only, efforts being directed at resisting Soviet advances.

In 1980, DST observed all year, then..

Since 1981, DST conformable with EU. Uses UT+2 basetime. [timeanddate.com]
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France
France adopted DST ('l'heure d'ete') 1916, abandoned it 1919;

..and resumed it 1925 through to Sep 1945, last Sat in March to first Sat Oct. was the rule (barring 1939: 15 Apr - 19 Nov; and 1940: start Feb 25), until 'harmonised' with German DST time in Paris & Occupied France: in Sep 1945 DST ended, and UT+1 became standard time.

Occupied Zone Paris, Northern France, (and later, Biscayan Atlantic Coast) base time moved to UT+1, 14 Jun '40 1940, Feb 25 - not ended.. 1942, ..not begun - 2 Nov 1943, 29 Mar - 4 Oct 1944, 3 Apr - 8 Oct 1945, 2 Apr - 16 Sep

Free Zone (Vichy Fr.) Vichy and South, Rhone-Alps, Medit. coast 1940, Mar 31 - Oct 5 1941, Mar 29 - Oct 4 1942, Mar ? - Oct ? 31 Dec, base-time made UT+1 1943, Mar 29 - 4 Oct 1944, 3 Apr - 8 Oct 1945, 2 Apr - 16 Sep

DST came in again, running ~end-March to ~end-Sept., the year after the 1975 oil crisis, viz:
1976: 28 Mar, 2am - 26 Sep, 3am
1977: 3 Apr, 2am - 25 Sep, 3am
1978: 2 Apr, 2am - 1 Oct, 3am
1979: 1 Apr, 2am - 30 Sep, 3am
1980: 6 Apr, 2am - 28 Sep, 3am
then converged with E.U. suggested dates

now at standard pan-European starts and ends (see 'Europe', above).
Adopted Territories in WW2: for Jersey, Guernsey, see Jersey, Guernsey.
Overseas territories: no DST in Tahiti, New Caledonia, Marquesas Is..
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Gaza Strip
DST currently seems to run last Friday March - 4th Friday in Sep.
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Georgia in Caucasus
is UT+4 (before 1 Mar 1957, was UT+3; and also between 28 Sep '91 to 25 Sep '94, and in the winter 2004/5 , UT+3 was base-time)
No DST until 1981, then 1 Apr - 1 Oct until convergent from 1984 with the then E.U. shifts: viz.
1984: Sun, 1 Apr, 00:00, to UT+5, - Sun, 30 Sep, 03:00, to UT+4...

1985: Sun, 31 Mar, 00:00, UT+5 - Sun, 29 Sep, 03:00, UT+4...
In 1991, in spring, having no advance made TZ UT+3 that autumn's DST end..
...In 1994, autumn, no DST end made TZ UT+4 again that autumn..
... in 2004, 27 Jun. and during DST, TZ made UT+3...
...finally, in 2005, DST advanced time to UT+4, - DST lapsed with this UT+4 the new TZ.
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Germany
began DST in 1916 ('Sommer Zeit') ~ start 30 Apr am - ended 30 Sept, 23 hr.
1917: 16 Apr - 17 Sept.
1918: 1:00 15 Apr, to 1.00 16 Sep.
- Monday mornings was the time of adjustment, in Germany, pre-1946.
After WW1, DST lapsed.

...the general imposition of war DST
1940: 1 Apr., an hour was added to CET, through to 2 Nov 1942.
1943: 29 Mar to 2 Nov.
1944: 3 Apr to 2 Oct.
1945: 2 Apr to, in Soviet-controlled areas, 1st Nov. (Kaliningrad), 18 Nov. (elsewhere); in Allied zone, 16 Sep.. (and a second DST shift: 24 May it began, it must have collapsed.. but no day)
1946: 14 Apr to 7 Oct. but Konigsberg was no longer part of Germany.
1947: 6 Apr to 5 Oct.
(and a second DST shift: 11 May - 29 Jun)
1948: 18 Apr to 3 Oct.
1949: 10 Apr to 2 Oct. (one report of a second DST shift ..)
After that, DST lapsed.

1980: 6 Apr to 28 Sep...

1981 to 1995, last Sunday in March to last Sun in September.
1996 and on, last Sunday in March to last Sun in October.
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Gibraltar (UK)
introduced DST 1916 (21 May - 1 Oct) on the then-standard GMT (=UT):
1917: 8 Apr - 17 Sep
1918: 24 Mar - 30 Sep
1919: 30 Mar - 29 Sep
... this shifted to Apr-Sep for 1923, and continued (1st Sun near Apr 1 - variable ends) up to 1940, then DST was made continuous year-round, and another hour added in 1941, on 4 May! DST thereafter set back Gibraltar's time an hour each winter for the duration of WW2, through to the DST summer of '45, ..on 15 Jul 1945, when the timezone changed back to UT; and DST ended that year on 7 Oct.
DST was observed again 1946, (in 1947 it went on to November), and was in use until 14 Apr '57, when Gibraltar adopted CET, (Spanish time, UT+1).


DST restored in 1982, ending last Sunday in Sep. through to 1996 when it ended last Sunday Oct., and has done so since. Conforms to EU starts and finishes now. [timeanddate.com]
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Greece
took up DST for 1916, and lapsed it.

1932: 7 July, 00:00- 1 Sep, 00:00

1941: (TZ shift to UT+3), 7 Apr

1941, (TZ shift to UT+2), 30 Apr
1942: (TZ shift to UT+1), 2 Nov
1943: DST 30 Mar - 4 Oct
1944: (TZ shift to UT+2), 4 Apr

1952: 1 July, 00:00- 2 Nov

1975: 12 April, 00:00 - 26 November, 01:00,
1976: 11 April, 02:00 - 10 October, 03:00
1977: 3 April, 02:00 - 26 September, 03:00
1978: 2 April, 02:00 - 24 September, 04:00
1979: 1 April, 09:00 - 29 September, 02:00
and continued, at some year adopting..

EU starts of last Sunday in March, and EU Sunday finishes, last Sunday in Sept, then after '95, in Oct. [en.wikip]
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Guatemala
Guatemala was on DST in 1973, '83 and '91.
On 29 Apr '06, DST was tried again; Sep 30 it ended.
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Guernsey, (UK)
had DST 1916-1968, then 1972 to date as in the UK.
German Occupation
.. the imposition of War DST
The base-time of UT was altered to UT-1 1940-45, - DST continued as Occupied France:
1940: 25 Feb - not ended..
1942, ..not begun - 2 Nov
1943: 29 Mar - 4 Oct
1944: 3 Apr ? - 8 Oct
1945: 2/3 Mar - 16 Sep; reverted to UT, with UK DST, (see below), until the '68-'71 interruption suggesting Guernsey & Jersey joined in the British Standard Time experiment, q.v. United Kingdom, below.
DST continued '72, on..

UK adopted EU style DST in 1997. [en.wikip]
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Haiti
recently had, and still has DST, at UT-4:
1983 - 1997 last Sun, then first Sun in Apr - last Sun Oct.
DST lapsed.

2005-'6 first Sun in Apr - last Sun Oct.

2012 to the present day, 2nd Sun in Mar - late Oct, or 1st Sun Nov. [en.wikip]
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Honduras
Honduras tried DST twice in the 80's : on 2 may 1987 an hour was added at 23:59:59, ending 26 sep same year; and 30 apr 1988 , ending 24 sep same year.
In the 90's, DST was brought back, may to sep 1994, (owing to a power shortage).
In 2006, May to August there was again DST.
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Hong Kong
had DST 1941, from 1945-'76, and in 1979. [en.wikip]
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Hungary
On timezone of UT+1, Hungary imposed DST 1916-1919, Apr to Oct, Sep, Sep, & Nov., respectively.

Under German client government...
1941 (continuous DST, May 1 1941 to Nov 1942) ..
1943 - '45 and every summer to 1950.

Then between 1954-'57, (May or Jun to Sep)

1980: 5 Apr - 28 Sep.

1981: 29 Mar - 27 Sep
.. and so to date, conforming with E.U. directive.[en.wikip]
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Iceland
had DST 1917-'18, and '39-'68. [en.wikip]
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India
had DST 1941-'45, starting in the Northern Hemisphere winter months in '41:
1941: 30 Sep., adopted DST (UT+6.30) - 1942: 14 May, reverted to UT+5.30...  then, on 31 Aug 1942 at 18 hr 30, a three-year TZ change to UT+6.30 was made.

1945: 14 Oct, at 17 h 30, TZ change ended, India reverting to UT+5.30. No DST thereafter. [en.wikip]
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Iraq
had DST 1983-2007, inclusive. In that last year, it ran Apr 1, 3am, to Oct 1, 4am, which was typical. [en.wikip]
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Iran
Iran has somtimes had DST since 1978, on various basetimes (UT+4 adopted '77; UT+3.30 re-adopted '79).
1978: 21 Mar - 21 Oct
1979: 21 Mar - 19 Oct
1980: 21 Mar - 23 Sep
DST lapsed unil 1990.

1990: all year DST.
1991: began 3 May - 21 Sep?.
Since then, they usually start on their New Year day of 21st or 22nd of March, ending 21st or 22nd Sep., e.g.:
2014: Sat, Mar 22, noon - Mon, Sep 22, noon
2015: Sun, Mar 22, noon - Tue, Sep 22, noon
2016: Mon, Mar 21, noon - Wed, Sep 21, noon
In Iran, DST is not interrupted during Ramadan. [en.wikip]
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Ireland see Eire above

Ireland, Northern see United Kingdom, below

Isle of Man
had DST 1916-1968, then 1972 to date as in the UK. This '68-'72 interruption indicates I. o M. joined in the British Standard Time experiment, q.v. United Kingdom, below.
For each year since 1916, see UK below.

Israel
Since 1949?, the summer-time of Israel always starts on the last Friday before April 2 from 02:00 to 03:00 and ends on the Sunday between Rosh Hashanah and Yom Kippur from 02:00 to 01:00. In previous years, the schedule was variable with the proviso that the period was to last at least 150 days.
(In the Palestinian Territories, DST begins later. q.v.)
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Italy
first had summer DST in the WW1.
1916: 3 Jun - 30 Sep
1917: 31 Mar - 30 Sep
1918: 9 Mar - 6 Oct
1919: 1 Mar - 4 Oct
1920: 20 Mar - 18 Sep

Starting again, year-round-DST served the war effort from 14 Jun 1940 to 2nd Nov '42, then summertimes-only, '43 - '48:
1943: 29 Mar - 4 Oct
1944: 3 Apr - 17 Sep
1945: 2 Apr - 15 Sep
1946: 17 Mar - 6 Oct
1947: 16 Mar - 5 Oct
1948: 29 Feb - 3 Oct

From 1949 there were no DST ('Ore Legale') till 1966, then 'midnight on Sunday nearest to 1st Jun, to midnight Sunday nearest to 1 Oct'; and in 1979 DST was lengthened, spanning end Mar to October, and as a consequence,

conformable with E.U. directive on DST.
More specifics, see Robbie Luporini's Astrolog32 manual, in his Pdf in Italian (pp.155 et sequ) here.
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Japan
In Japan there was DST from 1948 to 1951, running from May to Sep., while under American occupation. Since, the people have shown no enthusiasm for DST, and it has never been taken up.
1948: 1 May, 5pm - 10 Sep, 4pm
1949: 2 Apr, 5pm - 9 Sep, 4pm
1950: 6 May, 5pm - 8 Sep, 4pm
1951: 5 May, 5pm - 7 Sep, 4pm
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Jersey, (UK)
had DST 1916-1968, then 1972 to date as in the UK.
..the imposition of War DST
The base-time of UT was altered to UT-1 1940-45: - DST continued as Occupied France:
1940: 25 Feb - DST not ended..
1942: ..not begun - 2 Nov
1943: 29 Mar - 4 Oct
1944: 3 Apr ? - 8 Oct
1945: 2/3 Mar - 16 Sep; reverted to UT, with UK DST, (see below), until the '68-'71 interruption suggesting Guernsey & Jersey joined in the British Standard Time experiment, q.v. United Kingdom, below.
DST recommenced 1972, UK starts and finishes, until

UK adopted EU style DST in 1997. [en.wikip]
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Jordan
Jordan began adding an hour to their UT+2 timezone in 1973, and tried to abandon DST in 2012, with continuous DST (horlogeparlante.com & timeanddate.com suggest this revoked).
1973: 5 Jun 22hr - 30 Sep 21hr
1974: 30 Apr 22hr - 30 Sep 21hr
1975: 30 Apr 22hr - 30 Sep 21 hr
1976: 30 Apr 22hr - 31 Oct 21 hr
1977: 30 Apr 22hr - 30 Sep 21hr
1978: 29 Apr, 22hr - 29 Sep 21hr
'79 - '84, DST lapsed.

1985: 31 Mar 22hr - 30 Sep 21hr
1986: 3 Apr 22hr - 2 Oct 21hr
1987: 2 Apr 22hr - 1 Oct 21hr
1988: 31 Mar 22hr - 6 Oct 21hr
1989: 7 May - 5 Oct 21hr
1990: 26 Apr 22hr - 4 Oct 21hr
1991: 16 Apr 22hr - 26 Sep 21hr
and so on, late on Thursday nights, near start Apr - near end Sep, but see
1999: Wed 30 Jun 22hr -Thur 23 Sep 22 hr
..from 2000, 10pm on last Wednesday in Mar., to 10pm Thursdays in Sep or Oct.. it varies... after continuous summertime 2012 into 2013, see:
2013: (No DST Start) ..- DST ended Fri, 20 Dec. 00:00
2014: 28 Mar midnight - 31 Oct, 1:00am
and has continued, last Thursday March - last Thursday, Sept..
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Kaliningrad
first had DST Apr to Sept 1916, '17, '18.

the imposition of War DST
1940, continuous DST to 1942, then summerly to 3 Jul '44, during occupation, using Germany's basetime UT+1 TZ.

Took DST up again 1981, carried it through the abandoning of UT+3 for UT+2 in '98, ending it 31 Oct 2010, reverting to UT+2 - no DST now.[timeanddate.com]
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Korea, South
has tried DST twice:
Oct 1960: 14 May 16hr to UT+9 (KDT) - 12 Sep 15hr (KST)

1987: Sat 9 May, 15 hr - 10 Oct, 14 hr
1988: Sat 7 May, 15hr - Sat 8 Oct 14hr
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Kyrgyzstan
Kyrgyzstan had between 1981 and 2005 continuous DST, on a base-time of UT+5. In 2005, after a vote, it was decided to stop this 'fix', and from August 11, 2005 the time-zone of Kyrgyzstan altered permanently from UT+5 to UT+6.
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Latvia
had DST 1918-'19, on a base-time of UT+1.36'
1918: Mon, 15 Apr, 02:00 - Mon, 16 Sep, 03:00
1919: Tue, 1 Apr, 02:00 - Thu, 22 May, 03:00

the imposition of War DST
Under German rule, Latvia's brief spell of UT+3 under Soviet control, (1940, 5 Aug - 1941, 1 Jul) was abandoned for UT+1 with DST that spring, to suit Axis Time. DST did not end..
1942: DST ended 2 Nov
1943: 29 Mar - 4 Oct
1944: 3 Apr, - 2 Oct; on 13th, under Russians, UT+3 re-instated and used without DST until 1981

1981: a summer DST of UT+4 was started, 1 Apr - 1 Oct, and DST was converged as a part of the EU, '84 to:

last Sun Mar - last Sun Sep.
They adopted UT+2 basetime on 24 Sep 1989, having had no DST advance that year on their UT+3 basetime. A yearly DST continued, ending DST in Oct, 1996 on; but there's a suggestion that in 2000 they tried going without DST; but it resumed. [en.wikip]
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Lebanon
had intermittent DST in:
1920-'23

'57-61: May 1 to Oct 1;

1972: 22 Jun to 1 Oct..
1973-'77, May 1 to Oct 1;
1978: 30 Apr - 30 Sep..

1984: May 1 to 16 Oct.
... and since then. [en.wikip]
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Libya
observed DST in 1951, '55, '57, '82-'89, and in 1997. DST began again 2013, at EU starts and finishes. [en.wikip]
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Lichtenstein
observed DST in the war, early on first Mon in May to early on first Mon in Oct, '41 - '42, and since 1981.


Now conforming to EU DST agreements. [en.wikip]
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Lithuania
Under Soviet invasion, UT+1 was made UT+3, 3 Aug, 1940

1941: under Axis, from 24 Jun, 1941, one hour docked to suit Axis-style UT+1-with-DST
1942: DST finally ended 2 Nov
1943: 29 Mar - 4 Oct
1944: 3 Apr, - 1 Aug - country reverted to UT+3, no DST, under Soviet occupation.

More DST, 1981 on, running Apr 1 - Oct 1, - in mid-1984 adopting EU starts & finishes

.. until '91, when they went from UT+3 to UT+2 base-time (one source suggests they stopped DST for 12 years; another, that they continued it..)....used it for sure, 2003 to date. [en.wikip]
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Luxembourg
observed DST each summer 1916-1940

1941 - '46, as other occupied states..

Restarted 1977, convergent with emerging E.U. dates..

Since 1981, conforming to E.U. agreement q.v. above, Mar to Sep., and Mar to Oct 1996 0n.[en.wikip]
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Macao
observed DST between 1961-1980, Mar to Nov. No more info. [en.wikip]
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Macedonia
None until 1941:

1941: 18 Apr, 23:00... did not end until
1942: ...2 Nov, 03:00
1943: 29 Mar, 02:00 - 4 Oct, 03:00
1944: 3 Apr, 02:00 - 2 Oct, 03:00
1945: 8 May, 02:00 - 16 Sep, 03:00

None under Tito's 'Yugoslav' regime, from 16 sept 1945 to 27 mar 1983.

Thereafter EU-style DST.
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Madagascar
had DST in 1954, 27 Feb to 29 May. [en.wikip]
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Madeira, (Portuguese Terr.)
Then using UT-1 timezone, DST began 1916, using UT for summers:
1916: Sat 17 Jun - 1 Nov
1917: 28 Feb - 14 Oct; and similarly to 1921, end-Feb to 15 Oct.
No DST until 1924.

1924: 16 Apr - 15 Oct; and similarly, to 1929.
No DST until '31.

1931: DST Apr to 1st Sun Oct
1932: DST 2 Apr - 2 Oct.
1933: No DST
1934: DST again used, as above, to 1937.

Oct 1960: resumed, then from 1966, no DST until 1977 - Madeira has been on UT basetime since 1977

and its DST is EU-conformable since 1981. [timeanddate.com]
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Malaysia
began 20 minutes DST on 1 Jan 1933, continued thru' to 1935, (then as Malaya, a dominion of Great Britain); in 1935, this UT+7.20' was made Standard Malay Time, until in 1941 ten minutes were added - DST was therefore abandoned for good. [en.wikip]
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Malta
1966 was the first year of DST in Malta.

1984 adopted E.U. dates, in 1996 moving from the last Sunday in Sep to the last Sun in Oct.
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Mauritius
had DST in 1982-'83, and 2008-'09. [en.wikip]
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Mexico
Mexico's DST arrangement is complex: since 1995 most states have DSTs, and three none, but the length of DST differs from the norm in parts of states (north of the central area) and abutting the US.

Mexico legally enacted many summer TZ manoeuvres before 1996 not as DST adjustments, but by briefly changing the state's timezone: nevertheless, I tend to regard the TimeZone changes 1931, '39 - '45, and '88 as if they were DST shifts, and enquirers as to Mexican DST may usefully refer back to Mexico's TimeZone entry.

1939 Mexico City had DST, 5 feb - 25 jun. at UT-5
1940, Mexico City had DST, 9 dec - 1941, 1 apr. at UT-5 (wartime DST)
Westernmost Mexico, Baja Calif. Norte, e.g. Mexicali, prides itself on having applied DST properly for the first time in Mexico 1942, using UT-7. I don't know how long for.
1943, Mexico City had DST, 16 dec - 1944, 1 may, (an over-winter wartime DST)

Regarding the rest of the country, in 1976, '77, '78, '79, Westernmost Mexico, Baja Calif. Norte, e.g. Mexicali, (which was UT-8 in the Seventies), applied DST properly for the second time in Mexico, going to UT-7 last Sun Apr to last Sun Oct.

1988: DST adopted 3 Apr - 30 Oct, in Tamaulipas, Nuevo Leon, Coahuila, Durango, and Mexico City but not elsewhere, and it abandoned immediately after that year.

Finally, in 1996, almost every province agreed to give DST a try that 7th April, and it has run yearly ever since, but not in Sonora which gave up on it in '98, nor Quintana, where however Cancun had DST, from first Sun Apr to last Sun Oct, from '96 -2014 inclusive, and latterly on a basetime of UT-6.
Mexico DST runs first Sun (Apr.) 2am, to last Sun (Oct.) 2am, - so adding an hour to whatever base-time the state has adopted - for the most states including Sinaloa, but NOTE parts of Baja California, Chihuahua, Coahuila, Nuevo Leon, Tamaulipas have an even longer summer DST, running second Sun Mar, 3am, through into first Sun of Nov, 3am, see footnote 2 above, regarding towns like Heroica Matamoros, Juarez, Mexicali, Ocampo, Ojimaga, Piedras Negras, Tijuana, .. any if within 20km of US border.
Meanwhile, Sonora, Quintana & the Pacific Isles off Baja California and Colima have no DST. [sp.wikip]
In Chiapas many (mainly indigenous) people of southern Mexico refuse to apply it.
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Miquelon and Saint Pierre
First used DST 1987, starting last Sunday Apr, ending last Sunday Oct. In 2007, starts in early March to the last Sunday in November were introduced.
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Moldova
adopted DST 1932 after a timezone-change - Moldova had formerly been UT+1.44, and adopted UT+2, (DST Sundays early Apr - Sundays early Oct.)

To the end of 1940 and under German control, DST not allowed to end.
1941: DST still held, but a base timezone change came in, in July, to UT+1, so Moldova ending the year on UT+2.
1942: DST ended 2 Nov.
DST in '43 and '44, and timezone change in 1944 to base timezone UT+3, DST promptly abolished.


DST started again 1990, at EU dates, but DST abolished 2010. [en.wikip]
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Monaco & Monte Carlo
observed DST 1916-'45, and since 1976, matching France & the EU, q.v...

.. adopting DST-ends in October, 1996, like rest of EU.[en.wikip]
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Mongolia
observed DST 1983-'98

..and then again 2001-'06. [en.wikip]
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Montenegro
used UT+1 timezone, and had no DST until 1941:

1941: 18 Apr, 23:00... did not end until
1942: 2 Nov, 03:00
1943: 29 Mar, 02:00 - 4 Oct, 03:00
1944: 3 Apr, 02:00 - 2 Oct, 03:00
1945: 8 May, 02:00 - 16 Sep, 03:00
None under Tito's 'Yugoslav' regime, from 16 sept 1945 to 27 mar 1983.


Thereafter EU-style DST. [timeanddate.com]
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Morocco
Morocco had DST 1939-45, 1950, 1967, 1974-'79, 1984 and '85, and since 2008 to date; its starts and ends vary each year, e.g. in 2010, 2 May to 7 Aug..
[horlogeparlante.com]
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Namibia
had DST 1942-'43, and since 1994 to date. (southern hemisphere summer) [en.wikip]
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Netherlands
DST was used in WW1, 1916 - 1918, and then was continued, excepting only years 1946 - '76.
1916: Mon 1 May, 00:00 - Sun, 1 October, 00:00
1917: Mon 16 April, 2am - Mon, 17 Sept, 3am
1918: Mon 1 April, 2am - Mon, 30 Sept, 3am
1919: Mon 7 April, 2am - Mon, 29 Sept, 3am
1920: Mon 5 April, 2am - Mon, 27 Sept, 3am
1921: Mon 4 April, 2am - Mon, 26 Sept, 3am
1922: Mon 26 March, 2am - Sun, 8 Oct, 3am
1923: Fri, 1 June, 2am - Sun, 7 Oct, 03:00
1924: Sun, 30 March, 2am - Sun, 5 Oct, 3am
1925: Fri, 5 June, 2am - Sun, 4 Oct, 3am
1926: Sat, 15 May, 2am - Sun, 3 Oct, 3am
1927: Sun, 15 May, 2am - Sun, 2 Oct, 3am
1928: Tues, 15 May, 2am - Sun, 7 Oct, 3am
1929: Wed, 15 May, 2am - Sun, 6 Oct, 3am
1930: Thurs, 15 May, 2am - Sun, 5 Oct, 3am
1931: Fri, 15 May, 2am - Sun, 4 Oct, 3am
1932: Sun, 22 May, 2am - Sun, 2 Oct, 3am
1933: Mon, 15 May, 2am - Sun, 8 Oct, 3am
1934: Tues, 15 May, 2am - Sun, 7 Oct, 3am
1935: Wed, 15 May, 2am - Sun, 6 Oct, 3am
1936: Fri, 15 May, 2am - Sun, 4 Oct, 3am
1937: Sat, 22 May, 2am - Sun, 3 Oct, 3am
1938: Sun, 15 May, 2am - Sun, 2 Oct, 3am
1939: Mon, 15 May, 2am - Sun, 8 Oct, 3am

Under German occupation, DST of one hour was made a year-round 'fix', from 16 May 1940 to 2 Nov 1942, added to CET (UT+1) which, also under occupation, had replaced Amsterdam Time of UT in 1940: "at this time winter mornings were in gloaming until around 9:30 am; in the evening, however, it was light to 18:00.".
1940: Thurs, 16 May, 00:00 - No DST End...
1941: DST observed all year
1942....No DST Start... - Monday, 2 Nov, 3am
1943: Mon, 29 March, 02:00 - Monday, 4 Oct, 3am
1944: Mon, 3 April, 02:00 - Monday, 2 October, 3am
1945: Mon, 2 April, 02:00 - Sunday, 16 Sept, 3am
1946, DST lapsed.

1977: Sun, 3 April, 2am - Sun, 25 Sept, 3am
1978: Sun, 2 April, 2am - Sun, 1 Oct, 3am
1979: Sun, 1 April, 2am - Sun, 30 Sept, 3am, .. & so on through 1981

..DST ending Sep up to 1996, when last Sunday in Oct was adopted.

In the overseas territories of the Kingdom of the Netherlands (Aruba, Curaçao, Sint Maarten and the BES islands) no daylight saving applies.
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New Zealand
1927. One hour shift introduced: first Sun. Nov. to the first Sun. March of following year (Summer Time Act 1927), .. this proved unpopular.
1928 - a tweak. An half-hour shift from the 14 Oct 1928 (second Sunday) to 17 Mar 1929 (third Sunday), adopted (Summer Time Act 1928)
1929. The Summer Time Act 1929 fixed this half-hour shift to run from the second Sunday in Oct to the third Sunday in Mar of the year following.
In 1933, the DST period of an half-hour advance was extended from the first Sun. in September to the last Sun. in April.

This continued until the Second World War:
1941. Extended DST to apply to the whole year, re-applied yearly (emergency regulations in '41)
1945. Abandoned DST entirely, making the half-hour advance (to UT+12) permanent, calling it N.Z. Standard Time. (Standard Time Act of 1945)

By the Time Act 1974, the Governor-General declared a period for DST, a one-hour shift, 'NZDT', from the first Sunday in November (3rd) to the last Sunday in the February of '75 (23rd); promptly changed that year, 1975, to run in the years that followed, from the last Sunday in October to the first Sunday in March in following year. (The N.Z. Time Order 1975).

In 1988, as a consequence of feedback, the Minister of Internal Affairs arranged for a trial of extended 'NZDT' to be held from the second Sunday in October 1989 (8th), to the third Sunday in March 1990, (18th).. and so 'The Daylight Time Order 1990' declared that NZDT would run from 2 am NZST, the first Sunday in October to 3 am NZDT, the third Sunday in March.

On 30 April 2007 the government extended the daylight saving period from 24 to 27 weeks. So from Sep. 2007, DST is now observed from the last Sunday in September until the first Sunday in April (following year), viz:
30 April 2007, DST begins 02:00 NZST on the last Sunday in September, and ends at 03:00 NZDT (or 02:00 NZST as defined in the Time Act 1974) on the first Sunday in April of 2008.
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Nicaragua
observed DST in 1973-'75, '79-'80, '92-'94, and 2005-'06. [en.wikip]
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Norway
observed DST in 1916, 1940-'45, '59-'65, and since 1980.
1916: Mon, 22 May, 1am - Sat, 30 Sep 00:00


1940: Sat, 10 Aug, 23:00 - No DST End....
1941: ...DST all the year
1942: No DST Start ... - Monday, 2 Nov, 3pm
1943: Mon, 29 March, 2am - Monday, 4 Oct, 3pm
1944: Mon, 3 April, 2am - Monday, 2 Oct, 3pm
1945: Mon, 2 April, 2am - Monday, 1 Oct, 3pm
1946, DST lapsed.

1959: Sun, 15 March, 2am - Sun, 20 Sept, 3pm
1960: Sun, 20 March, 2am - Sun, 18 Sept, 3pm
1961: Sun, 19 March, 2am - Sun, 17 Sept, 3pm
1962: Sun, 18 March, 2am - Sun, 16 Sept, 3pm
1963: Sun, 17 March, 2am - Sun, 15 Sept, 3pm
1964: Sun, 15 March, 2am - Sun, 20 Sept, 3pm
1965: Sun, 25 April, 2am - Sun, 19 Sept, 3pm
1966, ... DST lapsed.

1980: Sun, 6 April, 2am - Sun, 28 Sept, 3pm

1981: Sun, 29 March, 2am - Sun, 27 Sept, 3pm
1982: Sun, 28 March, 2am - Sun, 26 Sept, 3pm
and so on.. in 1996, adopting last Sunday in October. Norway is clearly using EU starts and finishes, though not a member. [en.wikip]
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Ossetia (South)
DST began 1981 post-Soviets' collapse, lasting to 2004.
TZ mostly UT+3 ( but UT+4 from time to time: from 1924, UT+3 to Mar '57; from 29 Sep '91, UT+3 to 25 Sep 94, from Jun '04 to Mar '05, and now 2014 on).
1981 - 1984, DST yearly, 1 Apr to 1 Oct....adding an hour to TZ UT+4, (though 1984, 30 Sep was end-date DST..)

1985 -1991, DST ran yearly, last Sun, Mar, 2am - last Sun Sept (and in Sep '91, no DST advance in Spring, TZ became UT+3).
1991 - 1995, yearly (and in '94, no DST advance in Spring, so TZ became UT+4 again in Sep).
1996 - 2004, DST yearly: last Sun, Mar, 2am - last Sun Oct.
In 2004, no DST advance in Spring, so TZ became UT+3 again in Oct. as DST ended and lapsed for good.
(In 2014, TZ , as became UT+4 again.) [timeanddate.com]
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Pakistan
observed DST of UT+6:30, from 31 Aug 1942 to 14 Oct '45, when time reverted to its then standard 'Indian' UT+5.30.
(Basetime became UT+5 on 6.30 pm 29 Sep 1951, post-partition.)
In 2002, DST was maintained from 6 Apr to 5 Oct.
In 2008, from midnight 31 May/1 Jun to 31 Oct/1 Nov.
in 2009, from midnight 14/15 Apr to 31 Oct/1 Nov. [en.wikip]
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Palestine
observed DST
1957: May to Oct

1967: May to Jun

1974: 7 Jul to 13 Oct, and
1975: 20 Apr - 31 Aug.

1985: DST restarted Apr - Sep, There may have been timezone change 1 Jan 96. [en.wikip]
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Paraguay
first observed Southern hemisphere DST in 1970 ..
- These were the time change dates in Paraguay, 2013:
October 6, 2013 00:00 (DST on UT-3) - April 14, 2014 00:00 (Standard Time on UT-4)
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Peru
On 1985, 1986, 1989 and 1993, at 23:59:59, Dec 31, the clock was advanced by one hour, to be set back on 31 March of the following year at the same hour. Southern hemisphere DST.
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Philippines
In the Philippines, they have sporadically experimented with DST, both Summer hemisphere and Northern hemisphere style(!), until now, and each time for a short period.
1935: 12 Apr - 1 Jul
1936:1 Nov- 1937 1 Feb, Summer hemisphere style

1954: 12 Apr - 1 Jul

1978: 22 Mar - 21 Sep

1990: 21 May to 22 Jun. [en.wikip]
According to one source, in April 2006, the Philippine Department of Trade and Industry had the measure adopted again, against rising oil prices. No further info
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Poland
observed DST 1916-'19:
1916: Sun, 30 April, 23:00 - Sun, 1 Oct, 01:00
1917: Mon, 16 April, 02:00 - Mon, 17 Sept, 03:00
1918: Mon, 15 April, 02:00 , (and UT+2 made the standard time)
1919: Tues, 15 April, 02:00 - Tues, 16 Sept, 03:00, first summer at UT+3.
DST then lapsed

Jun 1922, they reverted TZ to UT+1.

In 1940-1949, under German, then Soviet control:

1940: Sun, 23 June, 02:00 - No DST End...
1941: DST observed all year...
1942: No DST Start... - it ended Mon, 2 Nov, 03:00
1943: Mon, 29 March, 02:00 - Mon, 4 Oct, 03:00
1944: Mon, 3 April, 02:00 - Wed, 4 October, 02:00
1945: Sun, 29 April, 00:00 - Thurs, 1 Nov, 00:00
1946: Sun, 14 April, 00:00 - Mon, 7 Oct, 03:00
1947: Sun, 4 May, 02:00 - Sun, 5 Oct, 03:00
1948: Sun, 18 April, 02:00 - Sun, 3 Oct, 03:00
1949: Sun, 10 April, 02:00 - Sun, 2 Oct, 03:00 .. & lapsed.

Re-commenced DST 1957-'64:
1957: Sun, 2 June, 01:00 - Sun, 29 Sept, 02:00
1958: Sun, 30 March, 01:00 - Sun, 28 Sept, 02:00
1959: Sun, 31 May, 01:00 - Sun, 4 Oct, 02:00
1960: Sun, 3 April, 01:00 - Sun, 2 Oct, 02:00
1961: Sun, 28 May, 01:00 - Sun, 1 Oct, 02:00
1962: Sun, 27 May, 01:00 - Sun, 30 Sep, 02:00
1963: Sun, 26 May, 01:00 - Sun, 29 Sep, 02:00
1964: Sun, 31 May, 01:00 - Sun, 27 Sep, 02:00

Then from 1977 to date:
1977: Sun, 3 April, 01:00 - Sun, 25 Sep, 02:00
1978: Sun, 2 April, 01:00 - Sun, 1 Oct, 02:00,.. and so on to 1981

then matching EU starts and finishes. [en.wikip]
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Portugal
began DST in WW1:
1916, mid-June, ending 1 Nov.
Subsequent years it began end-Feb, ending mid Oct, until 1921.

1924, re-started on Feb 28 through to mid-Oct., - lapsed in 1925.

re-commenced 1926, starting mid-April, ending early Oct, and continued with this pattern, (though missing 1930 & 1933), with only minor changes to 1942.
1942-1945, the 1 hour shift forward was started earlier & ended later, so permitting a yearly spell of double-summer-time from 3rd Sunday in April to mid-August.
In 1946, Portugal went back to one hour's DST advance, from 1st Sunday in Apr to 1st Sunday in Oct., so continuing to 1966, when Portugal abandoned DST for ten years, using UT+1 all year-round.

DST re-commenced 1977 - it may be then that they reverted to UT.

An EU member-state since 1986, and conforms to EU DST agreement.
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Rep South Africa
Southern hemisphere DST of UT+3 used in WW2:
1942: 20 Sep, 02:00 - 1943: 21 Mar, 02:00
1943: 19 Sep, 02:00 - 1944: 19 Mar, 02:00
1945: DST lapsed.
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Romania
observed DST in 1932-'39, and since 1979.
1900 - 1931, UTC +1:44:24 hr, then UT+2 adopted as TZ.
1932: Sat, 21 May, 00:00 - Sun, 2 Oct, 01:00
1933: Sun, 2 Apr, 00:00 - Sun, 1 Oct, 01:00
1934: Sun, 8 Apr, 00:00 - Sun, 7 Oct, 01:00
1935: Sun, 7 Apr, 00:00 - Sun, 6 Oct, 01:00
1936: Sun, 5 Apr, 00:00 - Sun, 4 Oct, 01:00
1937: Sun, 4 Apr, 00:00 - Sun, 3 Oct, 01:00
1938: Sun, 3 Apr, 00:00 - Sun, 2 Oct, 01:00
1939: Sun, 2 Apr, 00:00 - Sun, 1 Oct, 01:00
1940 - no DST... (German re-inforcement, 7 Oct '40.)
1941: no DST until 1978 inclusive, UTC +2 hours.

1979: Sun, 27 May, 00:00 - Sun, 30 Sep, 00:00, and similarly until 1995

then as EU up to now, adopting DST-ends in October in '96.

A source says that in 1986, Romanians were changing a day after the norm, in the early morning. An EU member-state since 2007. [en.wikip]
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Russia
DST was first applied, (I fancy only around Moscow), from 1917 to '21.
After the breakup of the U.S.S.R., Russia used DST from 1st Apr 1981 yearly, until end 2010, after which it was abolished. They used similar starts and ends to European states, but altered clocks at 2:00 pm.
There may have been another instance, in 1930: http://www.heynorton.org/blog/2005/07/daylight_saving.html (In the comments section: "Stalin put the USSR on DST that April and forgot to change it back in October and the USSR was "off" by an hour for over 60 years.") ~ this, anyway, accounts for Russia's TZ zoning, 1930 - 2011.
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Samoa, Independent or Western, In 2010, adopted DST, UT+13, through to early months of each following year. No more data.
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Serbia (former part of Yugoslavia)

1941: Fri, 18 Apr, 23:00 - no DST end...
1942: ...ended Mon, 2 Nov, 03:00
1943: Mon, 29 Mar, 02:00 - Mon, 4 Oct, 03:00
1944: Mon, 3 Apr, 02:00 - Mon, 2 Oct, 03:00
1945: Tue, 8 May, 02:00 - Sun, 16 Sep, 03:00
1946 to 1982, DST lapsed, TZ UTC +1.

1983: Sun, 27 Mar, 02:00 - Sun, 25 Sep, 03:00, and all years following as:

matching EU DST dates. [timeanddate.com]
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Singapore
observed DST 1932-'35, advancing clocks 20 mins all-year-round, then on 1 Jan 1936 adopted UT+7:20 mins as their year-round Standard Time (no DST), until on 1 Sep 1941 ten minutes more were added, tob make +7.30 their Standard Time.
(That ended with the Japanese tenure in WW2, around 15 Feb '42, - UT+9 was their official time). Currently, as with Kuala Lumpur, UT+8. [en.wikip]
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Slovakia
Slovakia: 1916-'18, 1940-'49, and since 1979.
In the first World War, there was DST 1916-'18, and 1940-'49, under Germany and the U.S.S.R.:

Continuous May 1 1941 to 2 Nov 1942.
1943: 29 Mar, 2am - 4 Oct, 3am
1944: 3 Apr 2am- 17 Sep 3am
1945: 8 Apr 2am - 18 Nov 3am
1946: 6 May 2am - 6 Oct 3am
1947: 20 Apr 2am - 5 Oct 3am
1948: 18 Apr 2am - 3 Oct 3am
1949: 9 Apr 2am - 2 Oct 3am
Then, it was a part of Czechoslovakia.

Since 1979, this new republic has had DST (Sun 1 Apr - Sun 30 Sep), changing 1981 to:
e.g.
1994: 27 Mar - 27 Sep
1995: 26 Mar - 24 Sep
1996: 21 Mar - 27 Oct
and so similarly, Sundays to Sundays, '97 to date, an EU member-state since 2004. [en.wikip]
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Slovenia
firat adopted DST under German occupation 1941

1941: 18 Apr, - to 1942, 2 Nov.
1943: 29 Mar - 4 Oct.
1944: 3 Apr - 2 Oct.
1945: 8 May - 16 Sep.


DST resumed 1983, last Sun in Mar to last Sun in Sept.; after 1995, Last Sun in Oct.[timeanddate.com]
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South Korea
observed DST 1948-'51 (no details), (allegedly 1955 to) 1960, and 1987-'88.
1960: 14 May, at 4pm, to 12 Sep at 3pm: (on a base-time UT+8)

1987: 9 May at 2pm, to 10 Oct at 2pm: (on a base-time UT+9)
1988: 7 May at 3pm, to 8 Oct at 2pm: (on a base-time UT+9). [en.wikip]
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Spain
DST first adopted 15 Apr 1918 and has been continuously used since then.

In 1981, definitive starts and finishes were established: last Sun in Mar, at 2am., ending last Sun in September, at 3am.. In 1996, the E.U. starts and finishes were ratified, - DST's ends since then are on the last Sun., October.

  Canary Islands, Las Canarias, has DST, EU starts and finishes, since Apr 1980, - but their TZ is UT. top

Sri Lanka
had, from Jan 5, 1942, continuous year-round DST till am Oct 16 1945, adding an hour to the Indian Standard Time of UT+5:30.
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Sweden
observed DST 1916, 15 May to 30 Sep. incl, and then dropped it till 1980, choosing first Sun Apr., to last Sun Sep.

Becoming an EU member-state 1995, so then conforming to EU dates; last Sun Mar to last Sun Oct since '96.
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Switzerland
observed DST 1941-'42 from May to Oct..

Since 1980 to date.

... lately conforming to the EU agreement, though not an EU member.
See more: http://de.wikipedia.org/wiki/Liste_der_Sommerzeiten
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Syria
observed DST 1920-'23, 1962-'68, and from 1983 to date (in those parts under government control). Syria adopted UT+2 on 31 Dec 1919, when re-constituted post WW1.
1920: 18 Apr midn't - 2 Oct, 23.00
1921: 17 Apr midn't - 1 Oct, 23.00
1922: 16 Apr midn't - 30 Sep, 23.00
1923: 15 Apr midn't - 6 Oct, 23.00
Then lapsed.

1962: 29 Apr midn't - 30 Sep, 23.00
1963: 1 May midn't - 29 Sep, 23.00
...Thereafter, on 1st May to 30 Sep., (1965, end 29th Sep; 1966, start 24 Apr) were Syria's DST starts and finishes and times until
1977: 1 May midn't - 31 Aug, 23.00
1978: 1 May midn't - 31 Aug, 23.00
1983: 9 Apr midn't - 30 Sept, 23.00
1984: 9 Apr midn't - 30 Sep, 23.00
1986: 16 Feb midn't - 8 Oct , 23.00
1987: 1 Mar midn't - 30 Oct, 23.00
1988: 15 Mar midn't - 30 Oct, 23.00
1989: 31 Mar midn't - 30 Sep, 23.00
1990: 1 Apr midn't- 29 Sep, 23.00
1991: 31 Mar midn't - 30 Sep, 21.00<>br> 1992: 7 Apr, 22.00 - 30 Sep, 21.00
1993: 25 Mar, 22.00 - 24 Sep, 21.00
1994: 31 Mar, 22.00 - 30 Sep, 21.00
1995 and thereafter - starting in the last three days of March, on a Sunday; ending on 30 September, until:
2006: 31 Mar , 22.00 - 21 Sep, 21.00
2007: 29 Mar, 22.00 - 1 Nov, 21.00
2008: 3 Apr , 22.00 - 31 Oct, 21.00
2009: 26 Mar, 22.00 - 29 Oct, 21.00
2010: 1 Apr, 22.00 - 28 Oct, 21.00

2011: 31 Mar, 22.00 - 27 Oct, 21.00
2012: 29 Mar, 22.00 - 25 Oct, 21.00
2013: 28 Mar, 22.00 - 24 Oct, 21.00
2014: 27 Mar, 22.00 - 30 Oct, 21.00
In 2015, last Friday in Mar - last Friday in Oct. (unless Nov 1 is a Friday).
Update needed - war rages.. [en.wikip]
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Tadjikistan
observed DST '81-'91. [en.wikip]
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Taiwan
Taiwan had DST from 1945 to 1961, and from 1974 to 1975. In the latter instance, DST started on 31 Mar before midnight and stopped on 30 Sep before midnight.
Later, from 29 Jun 1980 Taiwan had DST that lasted until 29 Sep. (But see a different year suggested, 1979, at [en.wikip].)
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Tunisia
Tunisia had DST in WW2:
1939: 15 apr to 18 nov, 10pm.
1940: from 25 feb 10pm, continuous through winter to 5 oct 1941, 10pm.
1942: 8 mar to 7 nov, 11pm.
1943: 29 mar, 1am, to 17 apr.
- advanced again, 25 apr to 4 oct, 1am.
1944: 3 apr, 1am to 7 oct, 10pm.
1945: 2 apr, 1am to 15 sep, 10pm.

More recently, there have been three spells of DST, the first in 1977 and 1978, commencing March-May and ending in late September,

A second from 1988 to 1990:
1988: 31 may to 24 sep, 11pm
1989: 25 mar to 23 sep, 11pm
1990: 30 apr to 29 sep, 11pm.

DST was reintroduced 2005, from 30 April 11pm to 30 September midnight.

From 2006 to 2008, the European starts and finishes were adopted; but DST was abolished 26 oct 2008.
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Turkey
observed DST 1916

1920-'22

1924-'25 (all started May to end Sep).
Lapsed.

In WW2, in 1940: Jun 30- Oct 5
1941, time adjustment it appears, to UT+2 by having no DST advance in spring, but setting time back 21 Sep.
1942: Apr 1 to Nov 1
1945-'51 start early Apr - end Oct.
1951 to 1961, DST lapsed.

1962: Jul 15 to Oct 7 inclusive

1964: May 15 to Sep 30 inclusive
DST lapsed, returned through 1970-'83

and since 1985.

In 1986 it was last Sun March - last Sun Sept., - last Sunday in Oct. since 1996, matching the EU DST. [various]
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Turkmenistan
observed DST Apr '81 to 29 Sept '91, - it ended during a nine-month trial of UT+4 TZ. [en.wikip]
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Ukraine
Ukraine had no DST until WW2:

1941, UT+1 timezone was imposed on 20 Sep., (with added DST through the winter & into late '42)..
1942: ..no DST start - DST end on 2 Nov. - back to UT+1
1943: DST 29 Mar - 4 Oct
UT+1 ended the same year, 6 Nov., when UT+3 TZ re-instated. DST lapsed until 1981.

1981, 1 Apr to UT+4, ending 1 Oct.
continuing DST using 1 Apr. to 1 Oct. until mid-1984, when

.. (then Mar to Sep), were adopted. Timezone set back to UT+2 in Jul 1990 during DST, that DST only ended Sep 1991.
DST, now at UT+3, in use each summer from 1992 to date, - last Sun Mar to last Sun Oct since 1996.[en.wikipedia.org][timeanddate.com]
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United Kingdom
has had DST since May 1916, and separate ordinances for the kingdom's islands were ended with UK Summer Time Act, 1922 - an Act to provide for the time in Great Britain, Northern Ireland, the Channel Islands, and the Isle of Man being "in advance of Greenwich mean time during a certain period". Its start had settled down to April by 1922, though it has shifted into March sometimes post-war, and consistently since 1961.

Subsequently it has continued, the authorities only interrupting it with 'British Standard Time 1968-71' and compounding it with an extra hour (summer months) during 'British WarTime' 1941-'45 and in 1947.

During the Second World War, DST was continuous in practice, starting from 25 Feb 1940, running Jan 1 - Dec 31; as well, from 1941, the clocks in Britain & N.Ireland made a second leap during the middle of summer. This so-called War-Time plus DST ended in 1945, although in 1947, due to severe fuel shortages, clocks were again advanced by one hour on two occasions during the spring, and put back by one hour on two occasions during the autumn. - see below.) ~ So, GMT was not in use at all for public time-keeping, from Feb 25, 1940 to Oct 7, 1945, nor from 18 feb 1968 to 31 oct 1971.

In the winters that followed 1945, clocks went back to being on UT (GMT) in winter, and barring 1947 (see above, below) advanced by one hour each spring/ put back by one hour each autumn.
Note: before 1960, DST started in some weekend in April, and ended the first Sunday Oct: in & after 1961, the UK's DST rule put the one hour's advance on GMT at 2am on the day following the third Saturday in March, ending 2am on the day following the fourth Saturday in October, each summer...

Until this nonsense:

1968 - '71 experiment with no DST, but with the clocks advanced to UT+1, year-round. It was called 'British Standard Time', starting 18 Feb. 1968, (when the clocks went forward), and brought to an end in 31 Oct 1971 (driven by the chagrin of a nation struggling to work an hour and a half before sun-up), when UT & DST resumed again. (See below )

E.U.-wide standard times of DST were not adopted until the nineties in the UK along with the Isle of Man & the Channel Islands, and were ratified in 2001 in the UK only.

Since 1997, UK (with Jersey, Guernsey, and N. Ireland) has been conformable with the EU-agreed (Directive 97/44/EC) dates for starting and ending.

Uruguay
has observed DST since 2004. DST (Southern Hemisphere) first tried:
1923-'26

1933-'43

1959-'60

1965-'70

1972

1974-'80

1987-'93

and since 2004. [en.wikip]
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U.S.A. mainland
Beginning 1918 during the First World War - last Sun Mar to last Sun Oct, DST was voted down August of that year, but continued in NYC, Chicago and Cleveland, for just a year in California. It was federally re-instated in 1926 as an option allowing states much choice; most states west of the Mississippi, and those south of Ohio, did not adopt it. This leaves Maine, New Hampshire, Massachusetts, Connecticut, Vermont, New York, Delaware, New Jersey, Pennsylvania, Maryland, maybe Ohio, which presumably did adopt.

In the Second World War, its general imposition ran, firstly, from Feb 9, 1942 to Sep 30, 1942, and thereafter, in '43, '44, '45, - all war-time charts from 1943 throughout the U.S. (even Arizona) should be erected applying one-hour DST to the base-time, up to 30 Sep '45.

In 1945 it reverted States' (or cities'!) choices until 1966, and from this time it was near universal in PA, MD, DE, and states to the north and east of those. Also DST was used in all California and Nevada, and in urban parts of Virginia, West Virginia, Iowa, Minnesota and Kentucky. In between, to quote Wikipedia, "In 1954, only a few cities between Nevada and St. Louis, Missouri had DST". But by 1966, cities' discretionary adoptions, and without agreed starts and ends, had made the situation chaotic.
The Uniform Time Act of 13 Apr 1966 obliged each state to choose whether or not to adopt, though a state spanning in a neighbouring time-zone could opt that part out; commonly, the rule adopted was last Sunday in March; last Sunday in October (but there are exceptions - as an example, Alaska adopted 'last week April to last week October', from 1969 to 1986; 'first week April to last week October' after that).
Indiana and Alaska opted out, but soon re-joined the vast majority. But Arizona, which for a few months in 1967 had DST, has stayed at base-time all year ever since: the Navajo Reservation lands in the north-west of Arizona do have DST, however.

In 1974, the oil crisis caused the near year-long extension of DST, 6 Jan intending the full year; public opposition ended that long DST on 27 Oct '74; 1975 it ran 23 Feb - 26 Oct. Then the prior arrangement resumed.

Finally, in March 11, 2007, DST was re-designated to run 2nd Sunday in March; first Sunday in November, 2:00 a.m to 2am.
Some states, like Indiana and Alaska, are considering abandoning DST again.

U S A offshore
Puerto Rico and Hawaii had DST in WW2 only.

  There's not much detail here! Information on the Web is patchy - for a fuller breakdown, seek out Doris Doane Chase's "Time in America".

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U.S.S.R. had no DST apart from the 1930 'accidental' timechange, until the Union's breakup 1980, when it was begun on the 1st Apr 1981. In Russia it ended 2010. See Russia.
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Western Sahara
has used Northern hemisphere DST each summer since 2008, starting then on Jun 1 to Sep 1. (Later years, May to Aug)
In 2014, it was interrupted for Ramadan, thus:
20 Mar - 28 Jun
2 Aug - 26 Oct. [en.wikip]
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Yugoslavia & its successor parts: Bosnia-Herzgovina/ Kosovo/ Macedonia/ Montenegro/ Serbia/ Slovenia/ Croatia
DST in parts under German occupation '42-'45 (no DST in resistance areas like Serbia); and since 1983, DST in some of the separate states, - for these q.v. above:

1941: Fri, 18 April, 23:00 No DST End....
1942:   No DST Start... - Mon, 2 Nov, 3am
1943: Mon, 29 March, 2am - Mon, 4 Oct, 3am
1944: Mon, 3 April, 2am - Mon, 2 Oct, 3am
1945: Tues, 8 May, 2am - Sun, 16 Sept, 3am
DST lapsed


1983: Sunday, 27 March, 2am - Sun, 25 Sept, 3am
1984 - 1995: 'last Sun in Mar, to last Sun in Sep'.
1996: Sun, 31 March, 2am - Sun, 27 Oct, 3am... and so on. [en.wikip][timeanddate.com]
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Islamic World
In the Islamic nations where DST is used, it runs frequently Friday to Friday, e.g.
last Friday in April; last Thursday night in September. or
Start: first Friday in April; End: last Friday in October.
However, in Egypt, Jordan, start and end-days vary, the time often midnight. Iraq was secular in its choice of dates, North Africa more religious.
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Antarctica
Although Southern Hemisphere DST is and has been used, Astrolog32 cannot make charts for these latitudes.