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In Portugal, DST (locally known by "Hora de Verão" (summer-time)) was introduced in 1916. In the years 1922, 1923, 1925, 1930, 1933 and from 1967 to 1975 the DST was not applied.<ref>{{Cite web|url=http://www.oal.ul.pt/download/dadosoutros/HoraLegaldesde1911.pdf|title=Hora Legal desde 1911 (Legal Hour since 1911)|language=Portuguese}}</ref>
In Portugal, DST (locally known by "Hora de Verão" (summer-time)) was introduced in 1916. In the years 1922, 1923, 1925, 1930, 1933 and from 1967 to 1975 the DST was not applied.<ref>{{Cite web|url=http://www.oal.ul.pt/download/dadosoutros/HoraLegaldesde1911.pdf|title=Hora Legal desde 1911 (Legal Hour since 1911)|language=Portuguese}}</ref>
For many years the official hour in the [[Madeira Islands]] was Lisbon hour -1 and in the [[Azores Islands]] was Lisbon hour -2.
For many years the official hour in the [[Madeira Islands]] was Lisbon hour -1 and in the [[Azores Islands]] was Lisbon hour -2.

Revision as of 11:46, 17 May 2012

In Portugal, DST (locally known by "Hora de Verão" (summer-time)) was introduced in 1916. In the years 1922, 1923, 1925, 1930, 1933 and from 1967 to 1975 the DST was not applied.[1] For many years the official hour in the Madeira Islands was Lisbon hour -1 and in the Azores Islands was Lisbon hour -2. Today, in the Madeira Islands the official hour is the same of Lisbon and in the Azores Islands is Lisbon hour -1.

List

DST in Continental Portugal[2][3]

Year Period Decree
1916 23h of 17 June until 1h of 1 November nº 2433 and nº 2712
1917 until 1921 00h of 1 March until 24h of 14 October nº 2922 and nº 3446
1922 and 1923 there was no DST nº 8038
1924 23h of 6 April until 24h of 4 October nº 9592
1925 there was no DST nº 10700
1926 23h of 17 April until 24h of 2 October nº 11574 and 12411
1927 23h of 9 April until 24h of 1 October nº 13384, 14312
1928 23h of 14 April until 24h of 6 October nº15321 and 15984
1929 23h of 20 April until 24h of 5 October nº 16704 and 17403
1930 there was no DST -
1931 23h of 18 April until 24h of 3 October nº 19522 and 20335
1932 23h of 2 April until 24h of 1 October nº 20963 and 21098
1933 there was no DST -
1934 23h of 7 April until 24h of 6 October nº 23722
1935 23h of 30 March until 24h of 5 October nº 25144
1936 23h of 18 April until 24h of 3 October nº 26 460 and nº 27 034
1937 23h of 3 April until 24h of 2 October nº 27591
1938 23h of 26 March until 24h of 1 October nº 28 534 and nº 29 029
1939 23h of 15 April until 24h of 18 November Portarias nº 9 187 and nº 9 334
1940 23h of 24 February until 24h of 7 October Portarias nº 9465 and nº 9658
1941 23h of 5 April until 24h of 5 October Portarias nº 9 764 and nº 9 900
1942 23h of 14 March until 24h of 24 October Portaria nº 10 034
23h of 25 April until 24h of 15 August[4]
1943 23h of 13 March until 24h of 30 October Portaria nº 10 348
23h of 17 April until 24h of 28 August[4]
1944 23h of 11 March until 24h of 28 October Portarias nº 10 612, 10727, 10760
23h of 22 April until 24h of 26 August[4]
1945 23h of 14 March until 24h of 28 October Portaria nº 10 889, 11 059
23h of 21 April until 24h of 25 August[4]
1946 23h of 6 April until 24h of 5 October Portarias nº 11 299
1947 2h of 6 April until 3h of 5 October Portarias nº 11 299
1948 2h of 4 April until 3h of 3 October Portarias nº 11 299
1949 until 1965 2h of first Sunday of April until 3h of first Sunday of October nº 37048
1966 2h of first Sunday of April até ao fim of ano nº 47223
1967 until 1975 there was no DST [5] nº 47223
1976 from start of the year until 1h of 26 September nº 309/76
1977 0h of 27 March until 1h of 25 September nº112/77
1978 1h of 2 April until 2h of 1 October nº113/78
1979 and 1980 1h of first Sunday of April until 2h of last Sunday September nº 112/79 and 69/80
1981 until 1985 0h of last Sunday of March until 1h of last Sunday September nº 309/76
1986 until 1991 1h of last Sunday of March until 1h of last Sunday September nº 44-B/86
1992 1h of last Sunday of March until end of year nº 44-B/86 and 194/92
1993 until 1995 2h of last Sunday of March until 3h of last Sunday September[6] nº 194/92
1996 of início of ano until 2h of 27 October nº 44-B/86, 17/96 and Directive of the European Parliament about summer time
after 1997 1h of last Sunday of March until 2h of last Sunday of October Directive of the European Parliament about summer time

See also

References

  1. ^ "Hora Legal desde 1911 (Legal Hour since 1911)" (PDF) (in Portuguese).
  2. ^ http://www.oal.ul.pt/download/dadosoutros/HoraLegaldesde1911.pdf
  3. ^ http://pt.wikipedia.org/wiki/Anexo:Lista_de_per%C3%ADodos_em_que_vigorou_o_hor%C3%A1rio_de_ver%C3%A3o_em_Portugal
  4. ^ a b c d double summer time
  5. ^ until hora legal of Portugal continental permaneceu adiantada 1 hora em relação until hora GMT, entre 1967 and 1975, o que correspondeu na prática until uma hora of verão em vigência o ano inteiro.
  6. ^ legal time of continental Portugal corresponds to 1 hour in advance of UTC in winter and to 2 hours in advance of UTC in summer in the years 1993 until 1995.
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