[tz] São Tomé and Príncipe tz change (Jan 1, 2019)

Paul Eggert eggert at cs.ucla.edu
Sat Dec 29 23:50:39 UTC 2018


Vadim Nasardinov via tz wrote:
> São Tomé and Príncipe is about to do the following on Jan 1, 2019:
> http://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-legal-sao-tomense/
> 
> “O Conselho de Ministros, relativamente a hora legal de São Tomé e
> Príncipe, decidiu que a partir de 1 de Janeiro de 2019 será reposta a nossa
> hora secular”

Thanks, this is news to me. STP-Press is the official news agency of the 
national goverment, so it's reasonably authoritative. Last year, Michael Deckers 
found a government-sourced URL for last year's change 
<http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017> 
which said that the transition was at 01:00. I can't find anything like that 
this year, so we can leave the transition time out (defaulting to 00:00 local time).

Proposed patch attached. Looks like we'll need another release soon, as the 
change takes effect in 48 hours or so.
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From a2ddd4a076b283ab80b20afbd70134efea451089 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert at cs.ucla.edu>
Date: Sat, 29 Dec 2018 15:46:40 -0800
Subject: [PROPOSED] =?UTF-8?q?S=C3=A3o=20Tom=C3=A9=20and=20Pr=C3=ADncipe?=
 =?UTF-8?q?=20moves=20back=20to=20UTC=20next=20month?=
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Content-Transfer-Encoding: 8bit

* NEWS: Mention this.
* africa (Africa/Sao_Tome): Switch from +01 to +00 on 2019-01-01.
---
 NEWS   | 11 +++++++++++
 africa |  7 ++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index c79f5d6..ba688b3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,16 @@
 News for the tz database
 
+Unreleased, experimental changes
+
+  Briefly:
+    São Tomé and Príncipe switches from +01 to +00 on 2019-01-01.
+
+  Changes to past and future timestamps
+
+    São Tomé and Príncipe switches back from +01 to +00 on 2019-01-01,
+    due to a change in government.  (Thanks to Vadim Nasardinov.)
+
+
 Release 2018h - 2018-12-23 17:59:32 -0800
 
   Briefly:
diff --git a/africa b/africa
index a83c387..61f1b43 100644
--- a/africa
+++ b/africa
@@ -1144,10 +1144,15 @@ Zone	Indian/Reunion	3:41:52 -	LMT	1911 Jun # Saint-Denis
 # the switch is from 01:00 to 02:00 ... [Decree No. 25/2017]
 # http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017
 
+# From Vadim Nasardinov (2018-12-29):
+# São Tomé and Príncipe is about to do the following on Jan 1, 2019:
+# https://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-legal-sao-tomense/
+
 Zone	Africa/Sao_Tome	 0:26:56 -	LMT	1884
 			-0:36:45 -	LMT	1912 Jan  1 00:00u # Lisbon MT
 			 0:00	-	GMT	2018 Jan  1 01:00
-			 1:00	-	WAT
+			 1:00	-	WAT	2019 Jan  1
+			 0:00	-	GMT
 
 # Senegal
 # See Africa/Abidjan.
-- 
2.17.1



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