Since 1970 the following are like Asia/Kolkata: Andaman Is Lakshadweep (Laccadive, Minicoy and Amindivi Is) Nicobar Is Indonesia From Paul Eggert (2014-09-06): The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia civil time was 7:07:12.5. From Gwillim Law (2001-05-28), overriding Shanks & Pottenger: http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime says that Indonesia's time zones changed on 1988-01-01. Looking at some time zone maps, I think that must refer to Western Borneo (Kalimantan Barat and Kalimantan Tengah) switching from UTC+8 to UTC+7. From Paul Eggert (2007-03-10): Here is another correction to Shanks & Pottenger. JohnTWB writes that Japanese forces did not surrender control in Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and other formal surrender ceremonies were September 9, 11, and 13, plus September 12 for the regional surrender to Mountbatten in Singapore. These would be the earliest possible times for a change. Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions Traditionnelles, 1987, Paris) says that Java and Madura switched from UT +09 to +07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura (Hollandia). For now, assume all Indonesian locations other than Jayapura switched on 1945-09-23. From Paul Eggert (2013-08-11): Normally the tz database uses English-language abbreviations, but in Indonesia it's typical to use Indonesian-language abbreviations even when writing in English. For example, see the English-language summary published by the Time and Frequency Laboratory of the Research Center for Calibration, Instrumentation and Metrology, Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29). The time zone abbreviations and UT offsets are: WIB - +07 - Waktu Indonesia Barat (Indonesia western time) WITA - +08 - Waktu Indonesia Tengah (Indonesia central time) WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time) Zone NAME STDOFF RULES FORMAT [UNTIL] Java, Sumatra STDOFF 7:07:12.5
Attributed Statements:
Paul Eggert (2014-09-06):
The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia civil time was 7:07:12.5.
Gwillim Law (2001-05-28):
http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime says that Indonesia's time zones changed on 1988-01-01. Looking at some time zone maps, I think that must refer to Western Borneo (Kalimantan Barat and Kalimantan Tengah) switching from UTC+8 to UTC+7.
Paul Eggert (2007-03-10):
Here is another correction to Shanks & Pottenger. JohnTWB writes that Japanese forces did not surrender control in Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and other formal surrender ceremonies were September 9, 11, and 13, plus September 12 for the regional surrender to Mountbatten in Singapore. These would be the earliest possible times for a change. Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions Traditionnelles, 1987, Paris) says that Java and Madura switched from UT +09 to +07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura (Hollandia). For now, assume all Indonesian locations other than Jayapura switched on 1945-09-23.
Paul Eggert (2013-08-11):
Normally the tz database uses English-language abbreviations, but in Indonesia it's typical to use Indonesian-language abbreviations even when writing in English. For example, see the English-language summary published by the Time and Frequency Laboratory of the Research Center for Calibration, Instrumentation and Metrology, Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29). The time zone abbreviations and UT offsets are: WIB - +07 - Waktu Indonesia Barat (Indonesia western time) WITA - +08 - Waktu Indonesia Tengah (Indonesia central time) WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time) Zone NAME STDOFF RULES FORMAT [UNTIL] Java, Sumatra STDOFF 7:07:12.5
asia(Lines 1317 to 1362)