Singapore Standard Time
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Following the Japanese occupation, Malaya adopted Tokyo time of GMT+9 on 15 February 1942. Although official appointments were made according to Tokyo time it was common practice to keep two separate times: the pre-Occupation time at home and Tokyo time on personal watches.
At the end of World War II and the return of Malaya to the British, Singapore reverted to its pre-war timezone.
In 1981, Malaysia decided to standardize the time across its territories to a uniform UTC+08:00. Singapore elected to follow suit, citing business and travel schedules. The change took effect on 1 January 1982, when Singapore moved half an hour forward, creating "Singapore Standard Time" (SST). SST is eight hours ahead of UTC and is synchronized with Hong Kong, Taipei, Beijing, Manila and Perth.
|Period in use||Time offset from UTC (GMT prior to 1972-01-01)|
|1 June 1905 – 31 December 1932||UTC+07:00|
|1 January 1933 – 31 August 1941||UTC+07:20|
|1 September 1941 – 15 February 1942||UTC+07:30|
|15 February 1942 – 11 September 1945||UTC+09:00|
|12 September 1945 – 31 December 1981||UTC+07:30|
|1 January 1982 – present||UTC+08:00|