From 7ffb999b145f35924c9539a2d0cf03eb8ad6f491 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Fri, 1 Jul 2022 12:59:43 -0500 Subject: [PROPOSED] =?UTF-8?q?Chile=E2=80=99s=201946/7=20time=20was=20DST?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit (Thanks to Michael Deckers.) * southamerica (America/Santiago, America/Punta_Arenas): Arrange for the first DST timestamp of Law 8,522 to be September 1 at 00:00. --- NEWS | 4 ++++ southamerica | 18 +++++++++++++++--- 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/NEWS b/NEWS index e95828d..8554b2e 100644 --- a/NEWS +++ b/NEWS @@ -23,6 +23,10 @@ Unreleased, experimental changes transition was on 05-27, not 03-21. (Thanks to Roozbeh Pournader and Francis Santoni.) + Chile's time from 1946-09-01 through 1947-03-31 was DST, not + standard time. (Thanks to Michael Deckers.) On 1946-09-01 + Santiago moved its clock back at 01:00, not at 00:00. + Changes to zone name Rename Europe/Kiev to Europe/Kyiv, as "Kyiv" is more common in diff --git a/southamerica b/southamerica index c01698b..483c8af 100644 --- a/southamerica +++ b/southamerica @@ -1167,6 +1167,17 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # on Monday 1947-05-19 and so took effect from Wednesday 1947-05-21 23:00. # https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19470519/#page/1 +# From Paul Eggert (2022-07-01): +# Law 8,522 says it took effect on publication (1946-08-28) and set +# the time zone to -04 with DST beginning 1946-08-31 at 23:00. +# Strictly speaking, this meant Chilean citizens would have needed +# to change their clocks twice, once on 08-28 and once late on 08-31. +# This sounds unlikely, so for now guess there was just one change late +# on 08-31, with clocks reading 1946-09-01 00:00 after the change. +# In other words, guess a transition at 09-01 00:00 in Punta Arenas +# (where only the tm_isdst flag changes) and at 09-01 01:00 in +# Santiago (which changes from -03 to -04, both with DST). + # From Eduardo Krell (1995-10-19): # The law says to switch to DST at midnight [24:00] on the second SATURDAY # of October.... The law is the same for March and October. @@ -1335,8 +1346,8 @@ Zone America/Santiago -4:42:45 - LMT 1890 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 -4:00 - -04 1946 Jul 15 - -4:00 1:00 -03 1946 Sep 1 # central Chile - -4:00 - -04 1947 Apr 1 + -4:00 1:00 -03 1946 Sep 1 1:00 + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 Zone America/Punta_Arenas -4:43:40 - LMT 1890 @@ -1348,7 +1359,8 @@ Zone America/Punta_Arenas -4:43:40 - LMT 1890 -5:00 Chile -05/-04 1932 Sep 1 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 - -4:00 - -04 1947 Apr 1 + -4:00 - -04 1946 Sep 1 + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 2016 Dec 4 -3:00 - -03 -- 2.36.1