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Move out-of-scope UTC+3 African zones to 'backzone'.
* africa (Africa/Addis_Ababa, Africa/Asmara, Africa/Dar_es_Salaam) (Africa/Djibouti, Africa/Kampala, Africa/Mogadishu, Indian/Antananarivo) (Indian/Comoro, Indian/Mayotte): Change these from zones to links to Africa/Nairobi. * backzone: Move the old data here. * checktab.awk (tztab): Remove special cases for these zones. * NEWS: Document the above.
This commit is contained in:
Paul Eggert
9
NEWS
9
NEWS
@ -10,6 +10,15 @@ Unreleased, experimental changes
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longer guess that Pyongyang mimicked Seoul time after World War II,
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as this is politically implausible.
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Some more zones have been turned into links, when they differed
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from existing zones only for older time stamps. As usual,
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these changes affect UTC offsets in pre-1970 time stamps only.
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Their old contents have been moved to the 'backzone' file.
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The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
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Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
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Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
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Indian/Mayotte.
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Changes affecting commentary
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The commentary is less enthusiastic about Shanks as a source,
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68
africa
68
africa
@ -64,7 +64,6 @@
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# 3:00 CAST Central Africa Summer Time (no longer used)
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# 3:00 SAST South Africa Summer Time (no longer used)
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# 3:00 EAT East Africa Time
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# 4:00 EAST East Africa Summer Time (no longer used)
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# Algeria
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
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@ -145,9 +144,7 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
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1:00 - WAT
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# Comoros
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
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3:00 - EAT
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# See Africa/Nairobi.
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# Democratic Republic of the Congo
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# See Africa/Lagos for the western part and Africa/Maputo for the eastern.
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@ -171,9 +168,7 @@ Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe
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Link Africa/Abidjan Atlantic/St_Helena # St Helena
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# Djibouti
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
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3:00 - EAT
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# See Africa/Nairobi.
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###############################################################################
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@ -386,27 +381,8 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
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# See Africa/Lagos.
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# Eritrea
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Asmara 2:35:32 - LMT 1870
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2:35:32 - AMT 1890 # Asmara Mean Time
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2:35:20 - ADMT 1936 May 5 # Adis Dera MT
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3:00 - EAT
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# Ethiopia
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# From Paul Eggert (2014-07-31):
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# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
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# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
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# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic.
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#
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# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
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# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
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# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50
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# was for Adis Dera. Quite likely the Shanks data entries are wrong
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# anyway.
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
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2:35:20 - ADMT 1936 May 5 # Adis Dera MT
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3:00 - EAT
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# See Africa/Nairobi.
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# Gabon
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# See Africa/Lagos.
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@ -450,6 +426,15 @@ Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
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2:30 - BEAT 1940
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2:45 - BEAUT 1960
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3:00 - EAT
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Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia
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Link Africa/Nairobi Africa/Asmara # Eritrea
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Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
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Link Africa/Nairobi Africa/Djibouti
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Link Africa/Nairobi Africa/Kampala # Uganda
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Link Africa/Nairobi Africa/Mogadishu # Somalia
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Link Africa/Nairobi Indian/Antananarivo # Madagascar
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Link Africa/Nairobi Indian/Comoro
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Link Africa/Nairobi Indian/Mayotte
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# Lesotho
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# See Africa/Johannesburg.
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@ -527,11 +512,7 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
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2:00 - EET
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# Madagascar
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
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3:00 - EAT 1954 Feb 27 23:00s
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3:00 1:00 EAST 1954 May 29 23:00s
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3:00 - EAT
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# See Africa/Nairobi.
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# Malawi
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# See Africa/Maputo.
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@ -634,9 +615,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
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# no information; probably like Indian/Mauritius
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# Mayotte
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
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3:00 - EAT
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# See Africa/Nairobi.
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# Morocco
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# See the 'europe' file for Spanish Morocco (Africa/Ceuta).
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@ -1048,11 +1027,7 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
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# See Africa/Abidjan.
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# Somalia
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
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3:00 - EAT 1931
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2:30 - BEAT 1957
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3:00 - EAT
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# See Africa/Nairobi.
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# South Africa
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
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@ -1095,11 +1070,7 @@ Link Africa/Khartoum Africa/Juba
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# See Africa/Johannesburg.
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# Tanzania
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
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3:00 - EAT 1948
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2:45 - BEAUT 1961
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3:00 - EAT
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# See Africa/Nairobi.
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# Togo
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# See Africa/Abidjan.
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@ -1205,12 +1176,7 @@ Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
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1:00 Tunisia CE%sT
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# Uganda
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
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3:00 - EAT 1930
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2:30 - BEAT 1948
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2:45 - BEAUT 1957
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3:00 - EAT
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# See Africa/Nairobi.
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# Zambia
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# Zimbabwe
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58
backzone
58
backzone
@ -40,6 +40,27 @@
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# As explained in the zic man page, the zone columns are:
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# Zone NAME GMTOFF RULES FORMAT [UNTIL]
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# Ethiopia
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# From Paul Eggert (2014-07-31):
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# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
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# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
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# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic.
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#
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# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
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# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
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# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50
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# was for Adis Dera. Quite likely the Shanks data entries are wrong
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# anyway.
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Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
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2:35:20 - ADMT 1936 May 5 # Adis Dera MT
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3:00 - EAT
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# Eritrea
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Zone Africa/Asmara 2:35:32 - LMT 1870
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2:35:32 - AMT 1890 # Asmara Mean Time
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2:35:20 - ADMT 1936 May 5 # Adis Dera MT
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3:00 - EAT
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# Mali (southern)
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Zone Africa/Bamako -0:32:00 - LMT 1912
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0:00 - GMT 1934 Feb 26
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@ -79,6 +100,16 @@ Zone Africa/Dakar -1:09:44 - LMT 1912
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-1:00 - WAT 1941 Jun
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0:00 - GMT
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# Tanzania
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Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
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3:00 - EAT 1948
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2:45 - BEAUT 1961
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3:00 - EAT
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# Djibouti
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Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
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3:00 - EAT
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# Cameroon
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# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
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Zone Africa/Douala 0:38:48 - LMT 1912
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@ -118,6 +149,13 @@ Zone Africa/Juba 2:06:24 - LMT 1931
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2:00 Sudan CA%sT 2000 Jan 15 12:00
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3:00 - EAT
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# Uganda
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Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
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3:00 - EAT 1930
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2:30 - BEAT 1948
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2:45 - BEAUT 1957
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3:00 - EAT
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# Rwanda
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Zone Africa/Kigali 2:00:16 - LMT 1935 Jun
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2:00 - CAT
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@ -174,6 +212,12 @@ Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
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Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
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2:00 - SAST
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# Somalia
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Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
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3:00 - EAT 1931
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2:30 - BEAT 1957
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3:00 - EAT
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# Niger
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Zone Africa/Niamey 0:08:28 - LMT 1912
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-1:00 - WAT 1934 Feb 26
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@ -517,5 +561,19 @@ Zone Europe/Zagreb 1:03:52 - LMT 1884
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1:00 - CET 1982 Nov 27
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1:00 EU CE%sT
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# Madagascar
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Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
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3:00 - EAT 1954 Feb 27 23:00s
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3:00 1:00 EAST 1954 May 29 23:00s
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3:00 - EAT
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# Comoros
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Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
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3:00 - EAT
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# Mayotte
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Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
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3:00 - EAT
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# US minor outlying islands
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Zone Pacific/Johnston -10:00 - HST
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@ -15,21 +15,12 @@ BEGIN {
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# Some more special cases; these are zones that should probably
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# be turned into links.
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if (zone_table == "zone1970.tab") {
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tztab["Africa/Addis_Ababa"] = 1
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tztab["Africa/Asmara"] = 1
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tztab["Africa/Dar_es_Salaam"] = 1
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tztab["Africa/Djibouti"] = 1
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tztab["Africa/Kampala"] = 1
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tztab["Africa/Mogadishu"] = 1
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tztab["America/Antigua"] = 1
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tztab["America/Cayman"] = 1
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tztab["Asia/Aden"] = 1
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tztab["Asia/Bahrain"] = 1
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tztab["Asia/Kuwait"] = 1
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tztab["Asia/Muscat"] = 1
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tztab["Indian/Antananarivo"] = 1
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tztab["Indian/Comoro"] = 1
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tztab["Indian/Mayotte"] = 1
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tztab["Pacific/Midway"] = 1
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tztab["Pacific/Saipan"] = 1
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}
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