Daylight saving time in Portugal
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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.[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
- ^ "Hora Legal desde 1911 (Legal Hour since 1911)" (PDF) (in Portuguese).
- ^ http://www.oal.ul.pt/download/dadosoutros/HoraLegaldesde1911.pdf
- ^ http://pt.wikipedia.org/wiki/Anexo:Lista_de_per%C3%ADodos_em_que_vigorou_o_hor%C3%A1rio_de_ver%C3%A3o_em_Portugal
- ^ a b c d double summer time
- ^ 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.
- ^ 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.