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1.1 ! root 1: # @(#)europe 4.10 ! 2: ! 3: # International country codes are used to identify countries' rules and ! 4: # zones ! 5: # ! 6: # This data is by no means authoritative; if you think you know better, go ! 7: # ahead and edit the file (and please send any changes to ! 8: # [email protected] for general use in the future). ! 9: ! 10: ############################################################################### ! 11: ! 12: # United Kingdom ! 13: ! 14: # From Arthur David Olson (January 19, 1989): ! 15: # ! 16: # The starting and ending dates below (from which the rules are derived) ! 17: # are from Whitaker's Almanack for 1987, page 146. ! 18: # 1960 is the earliest year for which dates are given; ! 19: # Whitaker's notes that British Summer Time (and, in some years, Double Summer ! 20: # Time) was observed in earlier years but does not give start and end dates. ! 21: # ! 22: # A source at the British Information Office in New York avers that it's ! 23: # known as "British" Summer Time in all parts of the United Kingdom. ! 24: # 1960 April 10 October 2 (yes, 2, according to the almanac) ! 25: # 1961 March 26 October 29 ! 26: # 1962 March 25 October 28 ! 27: # 1963 March 31 October 27 ! 28: # 1964 March 22 October 25 ! 29: # 1965 March 21 October 24 ! 30: # 1966 March 20 October 23 ! 31: # 1967 March 19 October 29 ! 32: # 1968 February 18 October 27 ! 33: # "British Standard Time, also one hour ahead of G. M. T., was kept between ! 34: # 1968 Oct. 27-1971 Oct. 31." ! 35: # 1972 March 19 October 29 ! 36: # 1973 March 18 October 28 ! 37: # 1974 March 17 October 27 ! 38: # 1975 March 16 October 26 ! 39: # 1976 March 21 October 24 ! 40: # 1977 March 20 October 23 ! 41: # 1978 March 19 October 29 ! 42: # 1979 March 18 October 28 ! 43: # 1980 March 16 October 26 ! 44: # 1981 March 29 October 25 ! 45: # 1982 March 28 October 24 ! 46: # 1983 March 27 October 23 ! 47: # 1984 March 25 October 28 ! 48: # 1985 March 31 October 27 ! 49: # 1986 March 30 October 26 ! 50: # 1987 March 29 October 25 ! 51: ! 52: # From an Anonymous U. K. Donor (January 4, 1989): ! 53: # ! 54: # It is NOT possible to predict when [British Summer Time] will change ! 55: # in a future year. ! 56: # ! 57: # (The admiralty calculate when they think it should be (no more that a couple ! 58: # of years in advance) and advise the government who then decide whether or ! 59: # not they will take the admiralty's advice) ! 60: # ! 61: # ...the Gre[e]nwich...observatory...[was] very helpful. ! 62: # ! 63: # I was not able to track down the Admiralty formula (I tried hard but failed) ! 64: ! 65: # ... ! 66: # Date: 4 Jan 89 08:57:25 GMT (Wed) ! 67: # From: Jonathan Leffler <nih-csl!uunet!mcvax!sphinx.co.uk!john> ! 68: # ... ! 69: # [British Summer Time] is fixed annually by Act of Parliament. ! 70: # If you can predict what Parliament will do, you should be in ! 71: # politics making a fortune, not computing. ! 72: # ! 73: # Summer time ends on Sunday 29 October 1989. ! 74: ! 75: # ... ! 76: # Date: 5 Jan 89 09:50:38 GMT (Thu) ! 77: # From: Peter Kendell <nih-csl!uunet!mcvax!tcom.stc.co.uk!pete> ! 78: # ... ! 79: # ! 80: # From my Collins Diary for 1989 - ! 81: # ! 82: # "At the time of going to press the Home Office was unable to confirm ! 83: # the 1989 starting and finishing dates for BST*, but expressed the ! 84: # view that 26 March and 29 October were the likeliest dates to be ! 85: # adopted" ! 86: # ! 87: # *British Summer Time. ! 88: ! 89: # From an Anonymous U. K. Donor (January 5, 1989): ! 90: # ! 91: # . . .our government is seriously considering applying Double Summer Time - ! 92: # putting the clocks forwards and back TWO hours for daylight saving time. ! 93: # This is advocated to standardise time in the EEC - we're all supposed to ! 94: # keep the same time and to change the clocks on the same dates in the future. ! 95: ! 96: # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S ! 97: # Historic starting rules ! 98: Rule GB-Eire 1960 only - Apr 10 1:00s 1:00 BST ! 99: Rule GB-Eire 1961 1963 - Mar lastSun 1:00s 1:00 BST ! 100: Rule GB-Eire 1964 1967 - Mar Sun>=19 1:00s 1:00 BST ! 101: Rule GB-Eire 1968 only - Feb 18 1:00s 1:00 BST ! 102: Rule GB-Eire 1972 1980 - Mar Sun>=16 1:00s 1:00 BST ! 103: # Historic ending rules ! 104: Rule GB-Eire 1960 only - Oct 2 1:00s 0 GMT ! 105: Rule GB-Eire 1961 1967 - Oct Sun>=23 1:00s 0 GMT ! 106: Rule GB-Eire 1971 only - Oct 31 1:00s 0 GMT ! 107: # Current rules ! 108: Rule GB-Eire 1981 max - Mar lastSun 1:00s 1:00 BST ! 109: Rule GB-Eire 1972 max - Oct Sun>=23 1:00s 0 GMT ! 110: ! 111: # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] ! 112: Zone GB-Eire 0:00 GB-Eire %s 1968 Oct 27 1:00s ! 113: 1:00 - BST 1971 Oct 31 1:00s ! 114: 0:00 GB-Eire %s ! 115: ! 116: ############################################################################### ! 117: ! 118: # Continental Europe ! 119: ! 120: # The use of 1986 as starting years below is conservative. ! 121: ! 122: Rule W-Eur 1986 max - Mar lastSun 1:00s 1:00 " DST" ! 123: Rule W-Eur 1986 max - Sep lastSun 1:00s 0 - ! 124: ! 125: Rule M-Eur 1986 max - Mar lastSun 2:00s 1:00 " DST" ! 126: Rule M-Eur 1986 max - Sep lastSun 2:00s 0 - ! 127: ! 128: Rule E-Eur 1986 max - Mar lastSun 3:00s 1:00 " DST" ! 129: Rule E-Eur 1986 max - Sep lastSun 3:00s 0 - ! 130: ! 131: Rule Turkey 1986 max - Mar lastSun 1:00 1:00 " DST" ! 132: Rule Turkey 1986 max - Sep lastSun 1:00 0 - ! 133: ! 134: Rule W-SU 1986 max - Mar lastSun 2:00s 1:00 " DST" ! 135: Rule W-SU 1986 max - Sep lastSun 2:00s 0 - ! 136: ! 137: # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] ! 138: Zone WET 0:00 W-Eur WET%s ! 139: Zone Iceland 0:00 - WET ! 140: Zone MET 1:00 M-Eur MET%s ! 141: Zone Poland 1:00 W-Eur MET%s ! 142: Zone EET 2:00 E-Eur EET%s ! 143: Zone Turkey 3:00 Turkey EET%s ! 144: Zone W-SU 3:00 M-Eur ???? ! 145: ! 146: # Tom Hoffman says that MET is also known as Central European Time ! 147: ! 148: Link MET CET ! 149: ! 150: ############################################################################### ! 151: ! 152: # One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from ! 153: # the last Sunday in March to the last Sunday in September in 1986. ! 154: # The source shows Romania changing a day later than everybody else. ! 155: # ! 156: # According to Bernard Sieloff's source, Poland is in the MET time zone but ! 157: # uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules. ! 158: # Bernard Sieloff's source claims Romania switches on the same day, but at ! 159: # 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey ! 160: # switches on the same day, but switches on at 01:00 standard time ! 161: # and off at 00:00 standard time (i.e., 01:00 DST) ! 162: ! 163: # ... ! 164: # Date: Wed, 28 Jan 87 16:56:27 -0100 ! 165: # From: seismo!mcvax!cgcha!wtho (Tom Hofmann) ! 166: # Message-Id: <[email protected]> ! 167: # ... ! 168: # ! 169: # ...the European time rules are...standardized since 1981, when ! 170: # most European coun[tr]ies started DST. Before that year, only ! 171: # a few countries (UK, France, Italy) had DST, each according ! 172: # to own national rules. In 1981, however, DST started on ! 173: # 'Apr firstSun', and not on 'Mar lastSun' as in the following ! 174: # years... ! 175: # But also since 1981 there are some more national exceptions ! 176: # than listed in 'europe': Switzerland, for example, joined DST ! 177: # one year later, Denmark ended DST on 'Oct 1' instead of 'Sep ! 178: # lastSun' in 1981---I don't know how they handle now. ! 179: # ! 180: # Finally, DST ist always from 'Apr 1' to 'Oct 1' in the ! 181: # Soviet Union (as far as I know). ! 182: # ! 183: # Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG, ! 184: # 4002 Basle, Switzerland ! 185: # UUCP: ...!mcvax!cernvax!cgcha!wtho ! 186: ! 187: # ... ! 188: # Date: Wed, 4 Feb 87 22:35:22 +0100 ! 189: # From: seismo!mcvax!cwi.nl!dik (Dik T. Winter) ! 190: # ... ! 191: # ! 192: # The information from Tom Hofmann is (as far as I know) not entirely correct. ! 193: # After a request from chongo at amdahl I tried to retrieve all information ! 194: # about DST in Europe. I was able to find all from about 1969. ! 195: # ! 196: # ...standardization on DST in Europe started in about 1977 with switches on ! 197: # first Sunday in April and last Sunday in September... ! 198: # In 1981 UK joined Europe insofar that ! 199: # the starting day for both shifted to last Sunday in March. And from 1982 ! 200: # the whole of Europe used DST, with switch dates April 1 and October 1 in ! 201: # the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch ! 202: # dates... ! 203: # ! 204: # It should also be remembered that time-zones are not constants; e.g. ! 205: # Portugal switched in 1976 from MET (or CET) to WET with DST... ! 206: # Note also that though there were rules for switch dates not ! 207: # all countries abided to these dates, and many individual deviations ! 208: # occurred, though not since 1982 I believe. Another note: it is always ! 209: # assumed that DST is 1 hour ahead of normal time, this need not be the ! 210: # case; at least in the Netherlands there have been times when DST was 2 hours ! 211: # in advance of normal time. ! 212: # ! 213: # ... ! 214: # dik t. winter, cwi, amsterdam, nederland ! 215: # INTERNET : [email protected] ! 216: # BITNET/EARN: dik@mcvax ! 217: ! 218: # From Bob Devine (January 28, 1988): ! 219: # ... ! 220: # Greece: Last Sunday in April to last Sunday in September (iffy on dates). ! 221: # Since 1978. Change at midnight. ! 222: # ... ! 223: # Monaco: has same DST as France. ! 224: # ...
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