Malaysia Time

Malaysia Standard Time (MST; Malay: Waktu Piawai Malaysia, WPM) or Malaysia 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 GMT+06:46:48. Peninsular Malaysia used this local mean time until 1880, when they changed to Singapore mean time GMT+06:55:24. 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.

The Malaysian government declared that people in West Malaysia (Peninsular) would move their clocks ahead by 30 min to match the time in use in East Malaysia (UTC+08:00 hrs an UTC+08:00:00 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 6:00 am (old time) to 6:30 am (new time).

...
Wikipedia