From 0588a349673bfd5b4edadb3e5c66266854ebf08e Mon Sep 17 00:00:00 2001 From: Tim Parenti Date: Tue, 12 Mar 2024 18:44:26 -0400 Subject: WIP v1.2: Portugal --- africa | 13 ++- asia | 9 +- backzone | 12 +-- europe | 309 +++++++++++++++++++++++++++++++++++++++++++++---------- 4 files changed, 272 insertions(+), 71 deletions(-) diff --git a/africa b/africa index 92d823a..8f593c5 100644 --- a/africa +++ b/africa @@ -105,11 +105,11 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 16 # # From Paul Eggert (2018-02-16): # Shanks gives 1907 for the transition to +02. -# For now, ignore that and follow the 1911-05-26 Portuguese decree +# For now, ignore that and follow the 1911-05-24 Portuguese decree # (see Europe/Lisbon). # # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia +Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 1 2:00u # Praia -2:00 - -02 1942 Sep -2:00 1:00 -01 1945 Oct 15 -2:00 - -02 1975 Nov 25 2:00 @@ -345,9 +345,9 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct # Guinea-Bissau # -# From Paul Eggert (2018-02-16): +# From Tim Parenti (2024-03-XXX), per Paul Eggert (2018-02-16): # Shanks gives 1911-05-26 for the transition to WAT, -# evidently confusing the date of the Portuguese decree +# evidently confusing a date given for the Portuguese decree # (see Europe/Lisbon) with the date that it took effect. # # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -1102,9 +1102,8 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún # Zimbabwe # # Shanks gives 1903-03-01 for the transition to CAT. -# Perhaps the 1911-05-26 Portuguese decree -# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf -# merely made it official? +# Perhaps the 1911-05-24 Portuguese decree merely made it official? +# (See Europe/Lisbon.) # # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Maputo 2:10:20 - LMT 1903 Mar diff --git a/asia b/asia index 80af184..208ff2e 100644 --- a/asia +++ b/asia @@ -1210,6 +1210,13 @@ Zone Asia/Tbilisi 2:59:11 - LMT 1880 # East Timor +# From Tim Parenti (2024-03-XXX): +# The 1912-01-01 transition occurred at 00:00 new time, per the 1911-05-24 +# Portuguese decree (see Europe/Lisbon). A provision in article 5(c) of the +# decree prescribed that Timor "will keep counting time in harmony with +# neighboring foreign colonies, [for] as long as they do not adopt the time +# that belongs to them in [the Washington Convention] system." + # See Indonesia for the 1945 transition. # From João Carrascalão, brother of the former governor of East Timor, in @@ -1233,7 +1240,7 @@ Zone Asia/Tbilisi 2:59:11 - LMT 1880 # midnight on Saturday, September 16. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 +Zone Asia/Dili 8:22:20 - LMT 1911 Dec 31 16:00u 8:00 - +08 1942 Feb 21 23:00 9:00 - +09 1976 May 3 8:00 - +08 2000 Sep 17 0:00 diff --git a/backzone b/backzone index f452503..cc51e09 100644 --- a/backzone +++ b/backzone @@ -346,9 +346,9 @@ Zone Africa/Lome 0:04:52 - LMT 1893 # Angola # -# From Paul Eggert (2018-02-16): +# From Tim Parenti (2024-03-XXX), per Paul Eggert (2018-02-16): # Shanks gives 1911-05-26 for the transition to WAT, -# evidently confusing the date of the Portuguese decree +# evidently confusing a date given for the Portuguese decree # (see Europe/Lisbon) with the date that it took effect. # Zone Africa/Luanda 0:52:56 - LMT 1892 @@ -1086,10 +1086,10 @@ Zone Asia/Muscat 3:54:24 - LMT 1920 4:00 - +04 # India -# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne: -# According to a Portuguese decree (1911-05-26) -# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf -# Portuguese India switched to UT +05 on 1912-01-01. +# From Tim Parenti (2024-03-XXX), per Paul Eggert (2014-08-11), after a +# heads-up from Stephen Colebourne: +# According to a Portuguese decree (1911-05-24), Portuguese India switched to +# UT +05 on 1912-01-01 (see Europe/Lisbon). #Zone Asia/Panaji [not enough info to complete] # Cambodia diff --git a/europe b/europe index c6b5270..77d1ed4 100644 --- a/europe +++ b/europe @@ -2063,10 +2063,39 @@ Zone Europe/Warsaw 1:24:00 - LMT 1880 # Portugal -# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne: -# According to a Portuguese decree (1911-05-26) -# https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf -# Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00. +# From Tim Parenti (2024-03-XXX), per Alois Treindl (2021-02-07) and Michael +# Deckers (2021-02-10): +# http://oal.ul.pt/documentos/2018/01/hl1911a2018.pdf/ +# The Astronomical Observatory of Lisbon has published a list detailing the +# historical transitions in legal time within continental Portugal. It +# directly references many decrees and ordinances which are, in turn, +# referenced below. They can be viewed in the public archives of the Diário da +# República (until 1976-04-09 known as the Diário do Govêrno) at +# https://dre.pt/ (in Portuguese). +# +# Most of the Rules below, have been updated simply to match the Observatory's +# listing for continental (mainland) Portugal. Although there are over 50 +# referenced decrees and ordinances, only the handful with comments below have +# been verified against the text, typically to provide additional confidence +# wherever dates provided by Whitman and Shanks & Pottenger had disagreed. +# See further below for the Azores and Madeira. + +# From Tim Parenti (2024-03-XXX), per Paul Eggert (2014-08-11), after a +# heads-up from Stephen Colebourne: +# According to a 1911-05-24 Portuguese decree, Lisbon was at -0:36:44.68, but +# switched to GMT on 1912-01-01 at 00:00. +# https://dre.pt/dr/detalhe/decreto/593090 +# https://dre.pt/application/conteudo/593090 +# The decree made legal time throughout Portugal and her possessions +# "subordinate to the Greenwich meridian, according to the principle adopted at +# the Washington Convention in 1884" and eliminated the "difference of five +# minutes between the internal and external clocks of railway stations". +# +# The decree was gazetted in the 1911-05-30 issue of Diário do Govêrno, and is +# considered to be dated 1911-05-24 by that issue's summary; however, the text +# of the decree itself is dated 1911-05-26. The Diário da República website +# notes the discrepancy, but later laws and the Observatory all seem to refer +# to this decree by the 1911-05-24 date. # # From Michael Deckers (2018-02-15): # article 5 [of the 1911 decree; Deckers's translation] ...: @@ -2074,37 +2103,62 @@ Zone Europe/Warsaw 1:24:00 - LMT 1880 # according to the 2nd article, the civil day January 1, 1912 begins, # all clocks therefore having to be advanced or set back correspondingly ... -# From Rui Pedro Salgueiro (1992-11-12): -# Portugal has recently (September, 27) changed timezone -# (from WET to MET or CET) to harmonize with EEC. -# -# Martin Bruckmann (1996-02-29) reports via Peter Ilieve -# that Portugal is reverting to 0:00 by not moving its clocks this spring. -# The new Prime Minister was fed up with getting up in the dark in the winter. -# -# From Paul Eggert (1996-11-12): -# IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions -# at 02:00u, not 01:00u. Assume that these are typos. -# IATA SSIM (1991/1992) reports that the Azores were at -1:00. -# IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00. -# Guess that the Azores changed to EU rules in 1992 (since that's when Portugal -# harmonized with EU rules), and that they stayed +0:00 that winter. -# # Rule NAME FROM TO - IN ON AT SAVE LETTER/S -# DSH writes that despite Decree 1,469 (1915), the change to the clocks was not -# done every year, depending on what Spain did, because of railroad schedules. -# Go with Shanks & Pottenger. +# From Tim Parenti (2024-03-XXX), per Paul Eggert (1999-01-30): +# DSH writes in their history that Decreto 1469 of 1915-03-30 established +# summer time and that, "despite" this, the change to the clocks was not done +# every year, depending on what Spain did, because of railroad schedules. +# In fact, that decree had nothing to do with DST; rather, it regulated the +# sending of time signals. But we do see linkage to Spain in the 1920s below. +# https://dre.pt/dr/detalhe/decreto/1469-1915-285721 +# https://dre.pt/application/conteudo/285721 +# +# According to the Observatory, standard time was first advanced by Decreto +# 2433 of 1916-06-09 and restored by Decreto 2712 of 1916-10-28. While Whitman +# gives 1916-10-31 for the latter transition, Shanks & Pottenger agrees more +# closely with the decree, which stated that its provision "will start sixty +# minutes after the end of 31 October, according to the current time," i.e., +# 01:00 on 1 November. +# https://dre.pt/dr/detalhe/decreto/2433-1916-267192 +# https://dre.pt/application/conteudo/267192 +# https://dre.pt/dr/detalhe/decreto/2712-1916-590937 +# https://dre.pt/application/conteudo/590937 Rule Port 1916 only - Jun 17 23:00 1:00 S -# Whitman gives 1916 Oct 31; go with Shanks & Pottenger. Rule Port 1916 only - Nov 1 1:00 0 - -Rule Port 1917 only - Feb 28 23:00s 1:00 S -Rule Port 1917 1921 - Oct 14 23:00s 0 - -Rule Port 1918 only - Mar 1 23:00s 1:00 S -Rule Port 1919 only - Feb 28 23:00s 1:00 S -Rule Port 1920 only - Feb 29 23:00s 1:00 S -Rule Port 1921 only - Feb 28 23:00s 1:00 S +# From Tim Parenti (2024-03-XXX): +# Article 7 of Decreto 2922 of 1916-12-30 stated that "the legal time will be +# advanced by sixty minutes from 1 March to 31 October." Per Article 15, this +# came into force from 1917-01-01. Just before the first fall back, Decreto +# 3446 of 1917-10-11 changed the annual end date to 14 October. +# https://dre.pt/dr/detalhe/decreto/2922-1916-261894 +# https://dre.pt/application/conteudo/261894 +# https://dre.pt/dr/detalhe/decreto/3446-1917-495161 +# https://dre.pt/application/conteudo/495161 +# This annual change was revoked by Decreto 8038 of 1922-02-18. +# https://dre.pt/dr/detalhe/decreto/8038-1922-569751 +# https://dre.pt/application/conteudo/569751 +Rule Port 1917 1921 - Mar 1 0:00 1:00 S +Rule Port 1917 1921 - Oct 14 24:00 0 - +# From Tim Parenti (2024-03-XXX): +# Decreto 9592 of 1924-04-14 noted that "France maintains the advance of legal +# time in the summer and Spain has now adopted it for the first time" and +# considered "that the absence of similar measures would cause serious +# difficulties for international rail connections with consequent repercussions +# on domestic service hours..." along with "inconvenient analogues...for postal +# and telegraph services." Summer time would be in effect from 17 April to 4 +# October, with the spring change explicitly specified by bringing clocks +# forward from 16 April 23:00. +# https://dre.pt/dr/detalhe/decreto/9592-1924-652133 +# https://dre.pt/application/conteudo/652133 +# +# Decreto 10700, issued 1925-04-16, noted that Spain had not continued summer +# time, declared that "the current legal hour prior to 17 April remains +# unchanged from that day forward", and revoked legislation to the contrary, +# just a day before summer time would have otherwise resumed. +# https://dre.pt/dr/detalhe/decreto/10700-1925-437826 +# https://dre.pt/application/conteudo/437826 Rule Port 1924 only - Apr 16 23:00s 1:00 S -Rule Port 1924 only - Oct 14 23:00s 0 - +Rule Port 1924 only - Oct 4 23:00s 0 - Rule Port 1926 only - Apr 17 23:00s 1:00 S Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 - Rule Port 1927 only - Apr 9 23:00s 1:00 S @@ -2116,6 +2170,8 @@ Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 - Rule Port 1932 only - Apr 2 23:00s 1:00 S Rule Port 1934 only - Apr 7 23:00s 1:00 S # Whitman gives 1934 Oct 5; go with Shanks & Pottenger. +# Note: The 1935 law specified 10-06 00:00, not 10-05 24:00, but the following +# is equivalent and more succinct. Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 - # Shanks & Pottenger give 1935 Apr 30; go with Whitman. Rule Port 1935 only - Mar 30 23:00s 1:00 S @@ -2126,10 +2182,19 @@ Rule Port 1938 only - Mar 26 23:00s 1:00 S Rule Port 1939 only - Apr 15 23:00s 1:00 S # Whitman gives 1939 Oct 7; go with Shanks & Pottenger. Rule Port 1939 only - Nov 18 23:00s 0 - +# From Tim Parenti (2024-03-XXX): +# Portaria 9465 of 1940-02-17 advanced clocks from Saturday 1940-02-24 23:00. +# The clocks were restored by Portaria 9658, issued Monday 1940-10-07, +# effective from 24:00 that very night, which agrees with Shanks & Pottenger; +# Whitman gives Saturday 1940-10-05 instead. +# https://dre.pt/dr/detalhe/portaria/9465-1940-189096 +# https://dre.pt/application/conteudo/189096 +# https://dre.pt/dr/detalhe/portaria/9658-1940-196729 +# https://dre.pt/application/conteudo/196729 Rule Port 1940 only - Feb 24 23:00s 1:00 S -# Shanks & Pottenger give 1940 Oct 7; go with Whitman. -Rule Port 1940 1941 - Oct 5 23:00s 0 - +Rule Port 1940 only - Oct 7 23:00s 0 - Rule Port 1941 only - Apr 5 23:00s 1:00 S +Rule Port 1941 only - Oct 5 23:00s 0 - Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S Rule Port 1942 only - Apr 25 22:00s 2:00 M # Midsummer Rule Port 1942 only - Aug 15 22:00s 1:00 S @@ -2139,35 +2204,120 @@ Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 S Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 M Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S Rule Port 1946 only - Oct Sat>=1 23:00s 0 - -# Whitman says DST was not observed in 1950; go with Shanks & Pottenger. -# Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger. -Rule Port 1947 1965 - Apr Sun>=1 2:00s 1:00 S +# From Tim Parenti (2024-03-XXX), per Alois Treindl (2021-02-07): +# The Astronomical Observatory of Lisbon cites Portaria 11767 of 1947-03-28 for +# 1947 and Portaria 12286 of 1948-02-19 for 1948. +# https://dre.pt/dr/detalhe/portaria/11767-1947-414787 +# https://dre.pt/application/conteudo/414787 +# https://dre.pt/dr/detalhe/portaria/12286-1948-152953 +# https://dre.pt/application/conteudo/152953 +# +# Although the latter ordinance explicitly had the 1948-10-03 transition +# scheduled for 02:00 rather than 03:00 as had been used in 1947, Decreto-Lei +# 37048 of 1948-09-07 recognized "that it is advisable to definitely set...the +# 'summer time' regime", and fixed the fall transition at 03:00 moving forward. +# https://dre.pt/dr/detalhe/decreto-lei/37048-1948-373810 +# https://dre.pt/application/conteudo/373810 +# While the Observatory only cites this act for 1949-1965 and not for 1948, it +# does not appear to have had any provision delaying its effect, so assume that +# it overrode the prior ordinance for 1948-10-03. +# +# Whitman says DST was not observed in 1950 and gives Oct lastSun for 1952 on. +# The Observatory, however, agrees with Shanks & Pottenger that 1950 was not an +# exception and that Oct Sun>=1 was maintained through 1965. +Rule Port 1947 1966 - Apr Sun>=1 2:00s 1:00 S Rule Port 1947 1965 - Oct Sun>=1 2:00s 0 - -Rule Port 1977 only - Mar 27 0:00s 1:00 S -Rule Port 1977 only - Sep 25 0:00s 0 - -Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S -Rule Port 1978 only - Oct 1 0:00s 0 - -Rule Port 1979 1982 - Sep lastSun 1:00s 0 - -Rule Port 1980 only - Mar lastSun 0:00s 1:00 S -Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S -Rule Port 1983 only - Mar lastSun 2:00s 1:00 S +# From Tim Parenti (2024-03-XXX): +# Decreto-Lei 47233 of 1966-10-01 considered that the "duality" in time was +# "the cause of serious disturbances" and noted that "the countries with which +# we have the most frequent contacts...have already adopted" a solution +# coinciding with the extant "summer time". It established that the former +# "summer time" would apply year-round on the mainland and adjacent islands +# with immediate effect, as the fall back would have otherwise occurred later +# that evening. +# https://dre.pt/dr/detalhe/decreto-lei/47233-1966-293729 +# Model this by changing zones without changing clocks at the +# previously-appointed fall back time. +# +# Decreto-Lei 309/76 of 1976-04-27 acknowledged that those international +# contacts had returned to adopting seasonal times, and considered that the +# year-round advancement "entails considerable sacrifices for the vast majority +# of the working population during the winter months", including morning +# visibility concerns for schoolchildren. It specified, beginning 1976-09-26 +# 01:00, an annual return to UT+00 on the mainland from 00:00 UT on Sep lastSun +# to 00:00 UT on Mar lastSun (unless the latter date fell on Easter, in which +# case it was to be brought forward to the preceding Sunday). It also assigned +# the Permanent Time Commission to study and propose revisions for the Azores +# and Madeira, neither of which resumed DST until 1982 (as described further +# below). +# https://dre.pt/dr/detalhe/decreto-lei/309-1976-502063 +Rule Port 1977 only - Mar lastSun 0:00s 1:00 S +Rule Port 1977 only - Sep lastSun 0:00s 0 - +# From Tim Parenti (2024-03-XXX): +# Beginning in 1978, rather than triggering the Easter rule of the 1976 decree +# (Easter fell on 1978-03-26), Article 5 was used instead, which allowed DST +# dates to be changed by order of the Minister of Education and Scientific +# Research, upon consultation with the Permanent Time Commission, "whenever +# considered convenient." As such, a series of one-off ordinances were +# promulgated for the mainland in 1978 through 1980, after which the 1976 +# decree naturally came back into force from 1981. +Rule Port 1978 1980 - Apr Sun>=1 1:00s 1:00 S +Rule Port 1978 only - Oct 1 1:00s 0 - +Rule Port 1979 1980 - Sep lastSun 1:00s 0 - +Rule Port 1981 1986 - Mar lastSun 0:00s 1:00 S +Rule Port 1981 1985 - Sep lastSun 0:00s 0 - +# From Tim Parenti (2024-03-XXX): +# Decreto-Lei 44-B/86 of 1986-03-07 switched mainland Portugal's transition +# times from 0:00s to 1:00u to harmonize with the EEC from 1986-03-30. +# https://dre.pt/dr/detalhe/decreto-lei/44-b-1986-628280 +# (Transitions of 1:00s as previously reported and used by the W-Eur rules, +# though equivalent, appear to have been fiction here.) Madeira continued to +# use 0:00s for spring 1986 before joining with the mainland using 1:00u in the +# fall; meanwhile, in the Azores the two were equivalent, so the law specifying +# 0:00s wasn't touched until 1992. (See below for more on the islands.) +# +# From Rui Pedro Salgueiro (1992-11-12): +# Portugal has recently (September, 27) changed timezone +# (from WET to MET or CET) to harmonize with EEC. +# +# Martin Bruckmann (1996-02-29) reports via Peter Ilieve +# that Portugal is reverting to 0:00 by not moving its clocks this spring. +# The new Prime Minister was fed up with getting up in the dark in the winter. +# +# From Paul Eggert (1996-11-12): +# IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions +# at 02:00u, not 01:00u. Assume that these are typos. # # Zone NAME STDOFF RULES FORMAT [UNTIL] #STDOFF -0:36:44.68 Zone Europe/Lisbon -0:36:45 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT - 0:00 Port WE%sT 1966 Apr 3 2:00 + 0:00 Port WE%sT 1966 Oct 2 2:00s 1:00 - CET 1976 Sep 26 1:00 - 0:00 Port WE%sT 1983 Sep 25 1:00s - 0:00 W-Eur WE%sT 1992 Sep 27 1:00s + 0:00 Port WE%sT 1986 + 0:00 EU WE%sT 1992 Sep 27 1:00u 1:00 EU CE%sT 1996 Mar 31 1:00u 0:00 EU WE%sT + +# From Tim Parenti (2024-03-XXX): +# For the Azores and Madeira, legislation was followed from the laws currently +# in force as listed at: +# https://oal.ul.pt/hora-legal/legislacao/ +# working backward through references of revocation and abrogation to +# Decreto-Lei 47233 of 1966-10-01, the last time DST was abolished across the +# mainland and its adjacent islands. Because of that reference, it is +# therefore assumed that DST rules in the islands prior to 1966 were like that +# of the mainland, though most legislation of the time didn't explicitly +# specify DST practices for the islands. +# +# This Zone can be simplified once we assume zic %z. Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -1:54:32 - HMT 1912 Jan 1 2:00u # Horta MT # Vanguard section, for zic and other parsers that support %z. -# -2:00 Port %z 1966 Apr 3 2:00 -# -1:00 Port %z 1983 Sep 25 1:00s -# -1:00 W-Eur %z 1992 Sep 27 1:00s +# -2:00 Port %z 1966 Oct 2 2:00s +# -1:00 - %z 1982 Mar 28 0:00s +# -1:00 Port %z 1986 +# -1:00 EU %z 1992 Sep 27 1:00s # Rearguard section, for parsers lacking %z; see ziguard.awk. -2:00 Port -02/-01 1942 Apr 25 22:00s -2:00 Port +00 1942 Aug 15 22:00s @@ -2177,16 +2327,48 @@ Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -2:00 Port +00 1944 Aug 26 22:00s -2:00 Port -02/-01 1945 Apr 21 22:00s -2:00 Port +00 1945 Aug 25 22:00s - -2:00 Port -02/-01 1966 Apr 3 2:00 - -1:00 Port -01/+00 1983 Sep 25 1:00s - -1:00 W-Eur -01/+00 1992 Sep 27 1:00s + -2:00 Port -02/-01 1966 Oct 2 2:00s +# From Tim Parenti (2024-03-XXX): +# While Decreto-Lei 309/76 of 1976-04-27 reintroduced DST on the mainland by +# falling back on 1976-09-26, it assigned the Permanent Time Commission to +# study and propose revisions for the Azores and Madeira. Decreto Regional +# 9/77/A of 1977-05-17 affirmed that "the legal time remained unchanged in the +# Azores" at UT-1, and would remain there year-round. +# https://dre.pt/dr/detalhe/decreto-regional/9-1977-252066 +# +# Decreto Regional 2/82/A, published 1982-03-02, adopted DST in the same +# fashion as the mainland used at the time. +# https://dre.pt/dr/detalhe/decreto-regional/2-1982-599965 +# Though transitions in the Azores officially remained at 0:00s through 1992, +# this was equivalent to the EU-style 1:00u adopted by the mainland in 1986, so +# model it as such. + -1:00 - -01 1982 Mar 28 0:00s + -1:00 Port -01/+00 1986 + -1:00 EU -01/+00 1992 Dec 27 1:00s # End of rearguard section. - 0:00 EU WE%sT 1993 Mar 28 1:00u +# From Paul Eggert (1996-11-12): +# IATA SSIM (1991/1992) reports that the Azores were at -1:00. +# IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00. +# +# From Tim Parenti (2024-03-XXX): +# After mainland Portugal had shifted forward an hour from 1992-09-27, Decreto +# Legislativo Regional 29/92/A of 1992-12-23 sought to "reduce the time +# difference" by shifting the Azores forward as well from 1992-12-27. Just six +# months later, this was revoked by Decreto Legislativo Regional 9/93/A, citing +# "major changes in work habits and way of life." Though the revocation didn't +# give a transition time, it was signed Wednesday 1993-06-16; assume it took +# effect later that evening, and that an EU-style spring forward (to +01) was +# still observed in the interim on 1993-03-28. +# https://dre.pt/dr/detalhe/decreto-legislativo-regional/29-1992-621553 +# https://dre.pt/dr/detalhe/decreto-legislativo-regional/9-1993-389633 + 0:00 EU WE%sT 1993 Jun 17 1:00u -1:00 EU -01/+00 + +# This Zone can be simplified once we assume zic %z. Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:07:36 - FMT 1912 Jan 1 1:00u # Funchal MT # Vanguard section, for zic and other parsers that support %z. -# -1:00 Port %z 1966 Apr 3 2:00 +# -1:00 Port %z 1966 Oct 2 2:00s # Rearguard section, for parsers lacking %z; see ziguard.awk. -1:00 Port -01/+00 1942 Apr 25 22:00s -1:00 Port +01 1942 Aug 15 22:00s @@ -2196,9 +2378,22 @@ Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:00 Port +01 1944 Aug 26 22:00s -1:00 Port -01/+00 1945 Apr 21 22:00s -1:00 Port +01 1945 Aug 25 22:00s - -1:00 Port -01/+00 1966 Apr 3 2:00 + -1:00 Port -01/+00 1966 Oct 2 2:00s # End of rearguard section. - 0:00 Port WE%sT 1983 Sep 25 1:00s +# From Tim Parenti (2024-03-XXX): +# Decreto Regional 5/82/M, published 1982-04-03, established DST transitions at +# 0:00u, which for Madeira is equivalent to the mainland's rules (0:00s) at the +# time. It came into effect the day following its publication, Sunday +# 1982-04-04, thus resuming Madeira's DST practice about a week later than the +# mainland and the Azores. +# https://dre.pt/dr/detalhe/decreto-regional/5-1982-608273 +# +# Decreto Legislativo Regional 18/86/M, published 1986-10-01, adopted EU-style +# rules (1:00u) and entered into immediate force after being signed on +# 1986-07-31. +# https://dre.pt/dr/detalhe/decreto-legislativo-regional/18-1986-221705 + 0:00 - WET 1982 Apr 4 + 0:00 Port WE%sT 1986 Jul 31 0:00 EU WE%sT # Romania -- 2.39.3 (Apple Git-145)