>From eff0719a7dc9e0fa7faae3fdce27752daac5a5e3 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Sat, 24 Oct 2020 14:55:32 -0700 Subject: [PROPOSED] Fix Kenya transitions 1908/1960 Fix several transitions from 1908 through 1960, and supply legal citations for the fixes. (Thanks to P Chan.) * NEWS: Mention this. * africa (Africa/Nairobi): Fix all transitions for 1908 through 1960. --- NEWS | 13 +++++++++++++ africa | 51 +++++++++++++++++++++++++++++++++++++++++++++++---- 2 files changed, 60 insertions(+), 4 deletions(-) diff --git a/NEWS b/NEWS index 328face..27ad63d 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,18 @@ News for the tz database +Unreleased, experimental changes + + Changes to past timestamps + + Correct several 1908 through 1960 transitions for Kenya and adjacent, + fixing several hazy entries originally derived from Shanks. + Insert a transition from LMT to +0230 on 1908-05. + The first transition to +03 was on 1928-06-30, not 1928-07. + The later transition to +0230 was on 1930-01-04, not the guessed 01-01. + The transition to +0245 was on 1936-12-31, not 1940. + And the final transition to +03 was on 1942-07-31, not 1960. + (Thanks to P Chan.) + Release 2020d - 2020-10-21 11:24:13 -0700 Briefly: diff --git a/africa b/africa index 566436b..2313e71 100644 --- a/africa +++ b/africa @@ -433,11 +433,54 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u 0:00 - GMT # Kenya + +# From P Chan (2020-10-24): +# +# The standard time of GMT+2:30 was adopted in the East Africa Protectorate.... +# [The Official Gazette, 1908-05-01, p 274] +# https://books.google.com/books?id=e-cAC-sjPSEC&pg=PA274 +# +# At midnight on 30 June 1928 the clocks throughout Kenya was put forward +# half an hour by the Alteration of Time Ordinance, 1928. +# https://gazettes.africa/archive/ke/1928/ke-government-gazette-dated-1928-05-11-no-28.pdf +# [Ordinance No. 11 of 1928, The Offical Gazette, 1928-06-26, p 813] +# https://books.google.com/books?id=2S0S6os32ZUC&pg=PA813 +# +# The 1928 ordinance was repealed by the Alteration of Time (repeal) Ordinance, +# 1929 and the time was restored to GMT+2:30 at midnight on 4 January 1930. +# [Ordinance No. 97 of 1929, The Official Gazette, 1929-12-31, p 2701] +# https://books.google.com/books?id=_g18jIZQlwwC&pg=PA2701 +# +# The Alteration of Time Ordinance, 1936 changed the time to GMT+2:45 +# and repealed the previous ordinance at midnight on 31 December 1936. +# [The Official Gazette, 1936-07-21, p 705] +# https://books.google.com/books?id=K7j41z0aC5wC&pg=PA705 +# +# The Defence (Amendment of Laws No. 120) Regulations changed the time +# to GMT+3 at midnight on 31 July 1942. +# [Kenya Official Gazette Supplement No. 32, 1942-07-21, p 331] +# https://books.google.com/books?hl=zh-TW&id=c_E-AQAAIAAJ&pg=PA331 +# The provision of the 1936 ordinance was not repealed and was later +# incorporated in the Interpretation and General Clauses Ordinance in 1948. +# Although it was overridden by the 1942 regulations. +# [The Laws of Kenya in force on 1948-09-21, Title I, Chapter 1, 31] +# https://dds.crl.edu/item/217517 (p.101) +# In 1950 the Interpretation and General Clauses Ordinance was amended to adopt +# GMT+3 permanently as the 1942 regulations were due to expire on 10 December. +# https://books.google.com/books?id=jvR8mUDAwR0C&pg=PA787 +# [Ordinance No. 44 of 1950, Kenya Ordinances 1950, Vol. XXIX, p 294] +# https://books.google.com/books?id=-_dQAQAAMAAJ&pg=PA294 + +# From Paul Eggert (2020-10-24): +# The 1908-05-01 announcement does not give an effective date, +# so just say "1908 May". + # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul - 3:00 - EAT 1930 - 2:30 - +0230 1940 - 2:45 - +0245 1960 +Zone Africa/Nairobi 2:27:16 - LMT 1908 May + 2:30 - +0230 1928 Jun 30 24:00 + 3:00 - EAT 1930 Jan 4 24:00 + 2:30 - +0230 1936 Dec 31 24:00 + 2:45 - +0245 1942 Jul 31 24:00 3:00 - EAT Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia Link Africa/Nairobi Africa/Asmara # Eritrea -- 2.25.1