British summer time dates from the horse's mouth
Arthur David Olson
ado
Mon Jul 17 18:39:20 UTC 1989
Here's a note I received last week, quoted with permission.
A new "europe" file should follow shortly, reflecting at least the
1990, 1991, and 1992 information.
--ado
> From ncifcrf!@NSFnet-Relay.AC.UK:@cs.heriot-watt.ac.uk:peter at memex.co.uk Thu Jul 13 09:48:05 1989
> Return-Path: <ncifcrf!@NSFnet-Relay.AC.UK:@cs.heriot-watt.ac.uk:peter at memex.co.uk>
> Received: from ncifcrf.UUCP by elsie (4.0/SMI-4.0)
> id AA09957; Thu, 13 Jul 89 09:48:03 EDT
> Received: from NSFnet-Relay.AC.UK by fcs280s.ncifcrf.gov (4.0/NCIFCRF-1.0)
> id AA25601; Thu, 13 Jul 89 04:54:06 EDT
> Received: from cs.heriot-watt.ac.uk by NSFnet-Relay.AC.UK via Janet with NIFTP
> id aa01688; 13 Jul 89 9:17 BST
> Received: by doc.memex.co.uk (5.54/memex_12)
> id AA20380; Tue, 4 Jul 89 10:30:35 BST
> Date: Tue, 4 Jul 89 10:30:35 BST
> From: Peter Ilieve <ncifcrf!NSFnet-Relay.AC.UK!peter%memex.co.uk>
> Message-Id: <8907040930.AA20380 at doc.memex.co.uk>
> To: fcs280s!ado
> Subject: British summer time dates from the horse's mouth
> Status: RO
>
> >From the UK Government paper "Summer Time: A Consultation Document"
> (HMSO Cm722 June 1989), which is about the possibility of the UK moving
> into the central European timezone and synchronising its summer time with
> the rest of Europe (by moving the end date back a month to end Sep.,
> the start dates are already the same).
>
> Summer time was not observed before 1916.
> It was introduced in the First World War in response to its introduction
> by Germany in March 1916.
> During the Second World War normal summer time was used in Winter and double
> summer time was used in Summer.
> Between 1968 and 1971 GMT+1 was used all year as an experiment.
> This caused voluble objections in Scotland and the experiment was judged
> a failure.
>
> Although it does not say what happens in Europe, it does say that most
> of Europe did not use summer time until 1979, presumably dropping it
> after the 1st and/or 2nd war.
>
> Note that this is not necessarily accurate for Eire.
>
> The paper gives a complete record of dates from 1916, and dates up to 1992.
> The intention is to have the new system, if any, start in 1993.
> The dates are (copied exactly from the table in the paper):
>
> Summer Time Double Summer Time
> Year Start End Start End
> 1916 21 May 1 October
> 1917 8 April 17 September
> 1918 24 March 30 September
> 1919 30 March 29 September
> 1920 28 March 25 October
> (extended from
> 27 Sep. because
> of coal strike)
>
> 1921 3 April 3 October
> 1922 26 March 8 October
> 1923 22 April 16 September
> 1924 30 April 21 September
> 1925 to 3rd Sunday 1st Sunday
> 1938 in April in October
>
> 1939 16 April 19 November
> 1940 25 February continued
> 1941 continued continued 4 May 10 August
> 1942 continued continued 5 April 9 August
> 1943 continued continued 4 April 15 August
> 1944 continued continued 2 April 17 September
> 1945 continued 7 October 2 April 15 July
>
> 1946 14 April 6 October
> 1947 16 March 2 November 13 April 10 August
> 1948 14 March 31 October
> 1949 3 April 30 October
> 1950 16 April 22 October
> 1951 15 April 21 October
> 1952 20 April 26 October
>
> 1953 19 April 4 October
> 1954 11 April 3 October
> 1955 17 April 2 October
> 1956 15 April 7 October
> 1957 14 April 6 October
> 1958 20 April 5 October
> 1959 19 April 4 October
> 1960 10 April 2 October
>
> 1961 26 March 29 October
> 1962 25 March 28 October
> 1963 31 March 27 October
> 1964 22 March 25 October
> 1965 21 March 24 October
> 1966 20 March 23 October
> 1967 19 March 29 October
>
> 1968 18 February continued
> 1969 continued continued
> 1970 continued continued
> 1971 continued 31 October
> 1972 19 March 29 October
> 1973 18 March 28 October
> 1974 17 March 27 October
>
> 1975 16 March 26 October
> 1976 21 March 24 October
> 1977 20 March 23 October
> 1978 19 March 29 October
> 1979 18 March 28 October
> 1980 16 March 26 October
> 1981 29 March 25 October
>
> 1982 28 March 24 October
> 1983 27 March 23 October
> 1984 25 March 28 October
> 1985 31 March 27 October
> 1986 30 March 26 October
> 1987 29 March 25 October
> 1988 27 March 23 October
>
> 1989 26 March 29 October
> 1990 25 March 28 October
> 1991 31 March 27 October
> 1992 29 March 25 October
>
> These dates agree with the ones from Whitaker's Almanac for 1960--87
> you quoted in your latest posting of the tzone stuff.
>
> If we do go into the CET zone then you will have one less thing to worry
> about in future.
>
> Peter Ilieve peter at memex.co.uk
>
>
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