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Malaysian Standard Time (MST; Malay: Waktu Piawai Malaysia, WPM) or Malaysian Time (MYT) is a standard time used in Malaysia. It is 8 hours ahead of Greenwich Mean Time and Coordinated Universal Time. The local mean time in Kuala Lumpur was originally UTC+06:46:46. Peninsular Malaysia used this local mean time until 1 January 1901, when they changed to Singapore mean time UTC+06:55:25. Between the end of the Second World War and the formation of Malaysia on 16 September 1963, it was known as British Malayan Standard Time, which was UTC+07:30 hours ahead of Greenwich Mean Time. At 2330 hrs local time of 31 December 1981, people in Peninsular Malaysia adjusted their clocks and watches ahead by 30 minutes to become 00:00 hours local time of 1 January 1982, to match the time in use in East Malaysia, which is UTC+08:00. SGT (Singapore) as follow on the same until now.

HistoryEdit

Time in Peninsular MalaysiaEdit

Period in use Time offset from UTC
(GMT prior to 1 January 1982)
Name of Time (unofficial)
Prior to 1 January 1901 UTC+06:46:46 British Malayan Mean Time
1 January 1901 – 31 May 1905 UTC+06:55:25 Singapore Mean Time
1 June 1905 – 31 December 1932 UTC+07:00 Standard Zone Time
1 January 1933 – 31 August 1941 UTC+07:20 Daylight Standard Time
1 September 1941 – 15 February 1942 UTC+07:30 Daylight Standard Time
16 February 1942 – 11 September 1945 UTC+09:00 Tokyo Standard Time
12 September 1945 – 31 December 1981 UTC+07:30 Daylight Standard Time/Malaysia Standard Time
1 January 1982 – present UTC+08:00 Malaysia Standard Time

Time in East MalaysiaEdit

Period in use Time offset from UTC
(GMT prior to 1 January 1982)
Name of Time (unofficial)
Prior to 1 March 1926 UTC+07:21:20 Kuching Mean Time
1 March 1926 – 31 December 1932 UTC+07:30 Sarawak Standard Time
1 January 1933 - 15 February 1942 UTC+08:00 Sarawak Standard Time
16 February 1942 – 11 September 1945 UTC+09:00 Tokyo Standard Time
12 September 1945 – 31 December 1981 UTC+08:00 Sarawak Standard Time
1 January 1982 – present UTC+08:00 Malaysia Standard Time

Standardisation of time in MalaysiaEdit

The Malaysian government declared that people in Peninsular Malaysia would move their clocks ahead by 30 min to match the time in use in East Malaysia (UTC+08:00 hrs an UTC+08:00 ahead of Greenwich Mean Time) on 31 December 1981. However, many found this to be awkward, as most of the population (roughly 80%) live in Peninsular Malaysia rather than in East Malaysia (on Borneo). The time was switched on 1 January 1982 at 00:00 (old time) to 00:30 (new time).

TimekeeperEdit

On 1 January 1990, the Malaysian Cabinet appointed the National Metrology Laboratory (Sirim) as the official timekeeper of Malaysia. The Malaysian Standard Time is derived from five atomic clocks maintained by Sirim.

IANA time zone databaseEdit

The IANA time zone database contains two zones for Malaysia in the file zone.tab:

c.c.* coordinates* TZ* comments* UTC offset UTC offset DST Notes
MY +0310+10142 Asia/Kuala_Lumpur peninsular Malaysia +08:00
MY +0133+11020 Asia/Kuching Sabah & Sarawak +08:00

External linksEdit