Singapore Standard Time
Singapore Standard Time (abbreviation: SST; Chinese: 新加坡時間) or Singapore Time (abbreviation: SIN; Chinese: 新加坡標準時間) based in Singapore uses a time zone eight hours in advance of UTC (UTC+08:00).
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[edit] History
According to longitude, Singapore is 103° 51' 16" East of Greenwich and lies within the UTC+07:00 time zone. Before 31 May 1905, the local time was UTC+06:55:25 ahead of Greenwich Mean Time.
During the Japanese occupation of Singapore, UTC+09:00 was used UTC+07:20 and UTC+07:30 were used for daylight saving time. When Peninsular Malaysia moved its standard time 30 minutes ahead from UTC+07:30 to UTC+08:00 on 31 December 1981, Singapore followed suit for economic and political reasons.
The city state started using UTC+08:00 on 1 January 1982 and the country celebrated New Year's Day half an hour earlier.
[edit] Singapore Time Server
National Metrology Centre, Singapore maintains caesium atomic clocks which are aggregated by Bureau International des Poids et Measures. This time is available to the public through a time server. The server supports Daytime Protocol, Time Protocol and Network Time Protocol. It is claimed that Singapore Standard Time is always accurate to 100 nanoseconds from UTC.
