Singapore Standard Time
Encyclopedia
Singapore Standard Time or Singapore Time (abbreviation: SIN; ) based in Singapore
uses a time zone eight hours in advance of UTC (UTC+08:00).
, 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.
. This time is available to the public through a time server. The server supports Daytime Protocol
, Time Protocol
and Network Time Protocol
and is accessible through the domain nets.org.sg. It is claimed that Singapore Standard Time is always accurate to 100 nanoseconds from UTC. It appears that the public is welcome to use the server.
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
uses a time zone eight hours in advance of UTC (UTC+08:00).
History
According to longitudeLongitude
Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is an angular measurement, usually expressed in degrees, minutes and seconds, and denoted by the Greek letter lambda ....
, Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
is 103° 51' 16" East of Greenwich
Greenwich
Greenwich is a district of south London, England, located in the London Borough of Greenwich.Greenwich is best known for its maritime history and for giving its name to the Greenwich Meridian and Greenwich Mean Time...
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
Greenwich Mean Time
Greenwich Mean Time is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London. It is arguably the same as Coordinated Universal Time and when this is viewed as a time zone the name Greenwich Mean Time is especially used by bodies connected with the United...
. During the Japanese occupation of Singapore
Japanese Occupation of Singapore
The Japanese occupation of Singapore in World War II occurred between about 1942 and 1945 after the fall of Singapore on 15 February 1942. Military forces of the Empire of Japan occupied Singapore after defeating the combined Australian, British, Indian and Malayan garrison in the Battle of Singapore...
UTC+09:00 was used. UTC+07:20 and UTC+07:30 were used for daylight saving time
Daylight saving time
Daylight saving time —also summer time in several countries including in British English and European official terminology —is the practice of temporarily advancing clocks during the summertime so that afternoons have more daylight and mornings have less...
. When Peninsular Malaysia
Peninsular Malaysia
Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...
moved its standard time 30 minutes ahead from UTC+07:30 to UTC+08:00 on 31 December 1981, Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
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
New Year's Day
New Year's Day is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar used in ancient Rome...
half an hour earlier.
Singapore Time Server
SPRING Singapore maintains caesium atomic clocks which are aggregated by Bureau International des Poids et MeasuresInternational Bureau of Weights and Measures
The International Bureau of Weights and Measures , is an international standards organisation, one of three such organisations established to maintain the International System of Units under the terms of the Metre Convention...
. This time is available to the public through a time server. The server supports Daytime Protocol
DAYTIME
The Daytime Protocol is a service in the Internet Protocol Suite, defined in 1983 in RFC 867. It is intended for testing and measurement purposes in computer networks....
, Time Protocol
TIME protocol
The Time Protocol is a network protocol in the Internet Protocol Suite defined in 1983 in RFC 868. Its purpose is to provide a site-independent, machine readable date and time....
and Network Time Protocol
Network Time Protocol
The Network Time Protocol is a protocol and software implementation for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. Originally designed by David L...
and is accessible through the domain nets.org.sg. It is claimed that Singapore Standard Time is always accurate to 100 nanoseconds from UTC. It appears that the public is welcome to use the server.