Malaysian Standard Time
Encyclopedia
Malaysia Standard Time or Waktu Piawai Malaysia (WPM) or Malaysia Time (MYT) is a standard time
Standard time
Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. Historically, this helped in the process of weather forecasting and train travel. The concept...

 used in Malaysia. It is 8 hours
UTC+8
UTC+08:00 is an identifier for a time offset from UTC of +08:00. In ISO 8601 the associated time would be written as .With an estimated population of 1.53 billion living within the time zone, roughly 22.5% of the world population, it is the most populous time zone in world, as well as a possible...

 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...

 and Coordinated Universal Time
Coordinated Universal Time
Coordinated Universal Time is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich Mean Time. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose...

. The local mean time in Kuala Lumpur
Kuala Lumpur
Kuala Lumpur is the capital and the second largest city in Malaysia by population. The city proper, making up an area of , has a population of 1.4 million as of 2010. Greater Kuala Lumpur, also known as the Klang Valley, is an urban agglomeration of 7.2 million...

 was originally GMT+06:46:48. 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...

 used this local mean time until 1880, when they changed to 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...

 mean time GMT+06:55:24. Between the end of the Second World War and the formation of Malaysia in 16 September 1963, it was known as British Malayan Standard Time, which was UTC+07:30
UTC+7:30
UTC+07:30 is an identifier for a time offset from UTC of +07:30.UTC+07:30 was used both as daylight saving time as well as its Standard Time later in Singapore. Between 1941 and 1942 before the Japanese occupation, and from 1945 to 1970 after the occupation, Singapore used UTC+07:30 as its daylight...

 hours 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...

. At 2330 hrs local time of 31 December 1981 people in 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...

 adjusted their clocks and watches ahead by 30 minutes to become 0000 hrs local time of 1 January 1982, to match the time in use in East Malaysia
East Malaysia
East Malaysia, also known as Malaysian Borneo, is the part of Malaysia located on the island of Borneo. It consists of the Malaysian states of Sabah and Sarawak, and the Federal Territory of Labuan. It lies to the east from Peninsular Malaysia , which is located on the Malay Peninsula. The two are...

 which is UTC+08:00.

Time changing chronicles (Peninsular Malaysia)

Period in use Time offset from GMT Name of Time (unofficial)
1 January 1901 - 31 May 1905 UTC+06:46:48 British Malayan Mean Time
1 June 1905 - 31 December 1932 UTC+07:00:00 Standard Zone Time
1 January 1933 - 31 August 1941 UTC+07:20:00 Daylight Standard 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...

1 September 1941 - 15 February 1942 UTC+07:30:00 Daylight Standard 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...

16 February 1942 - 12 September 1945 UTC+09:00:00 Tokyo Standard Time
Japan Standard Time
Japan Standard Time or JST is the standard timezone of Japan, and is 9 hours ahead of UTC. For example, when it is midnight in UTC, it is 09:00 in Japan Standard Time. There is no daylight saving time, though its introduction has been debated several times. Japan Standard Time is the same as...

13 September 1945 - 31 December 1981 UTC+07:30:00 Daylight Standard 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...

/Malaysia Standard Time
13 September 1945 - 31 December 1981 UTC+07:30:00 Daylight Standard 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...

/East Malaysia Standard Time
13 September 1945 - 30 April 1982 UTC+07:30:00 Daylight Standard 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...

/Peninsular Malaysia Standard Time
1 January 1982 – Present UTC+08:00:00 Malaysia Standard Time
1 January 1982 – Present UTC+08:00:00 East Malaysia Standard Time
1 May 1982 – Present UTC+08:00:00 Peninsular Malaysia Standard Time

Time in East Malaysia

The local mean time in Kota Kinabalu
Kota Kinabalu
Kota Kinabalu , formerly known as Jesselton, is the capital of Sabah state in East Malaysia. It is also the capital of the West Coast Division of Sabah. The city is located on the northwest coast of Borneo facing the South China Sea. The Tunku Abdul Rahman National Park lies on one side and Mount...

 is UTC+07:44:20. Sabah
Sabah
Sabah is one of 13 member states of Malaysia. It is located on the northern portion of the island of Borneo. It is the second largest state in the country after Sarawak, which it borders on its southwest. It also shares a border with the province of East Kalimantan of Indonesia in the south...

 and Sarawak
Sarawak
Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...

 used local mean time until 1926. They then changed to UTC+07:30. In 1933 when West 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...

 changed to UTC+07:20 they changed to UTC+08:00 with a 20-minute time change between 14 September and 14 December. During the Japanese occupation
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 based in Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 time (UTC+09:00) was used, before changing back to UTC+08:00 but without the daylight saving time in 1945.

Zone Asia/Kuching
UTC+07:44:20  - Kota Kinabalu Mean Time 1926 1 March
UTC+07:30:00  - Perak Standard Time 1933 1 January
UTC+09:00:00  - Japan Standard Time 1942 16 February
UTC+07:30:00  - Perak Standard Time 1945 1 September
UTC+08:00:00  - Sabah Standard Time 1963 1 September
UTC+08:00:00  - Malaysia Standard Time 1982 1 January
UTC+08:00:00  - East Malaysia Standard Time 1982 1 January
UTC+08:00:00  - Peninsular Malaysia Standard Time 1982 1 May

# Rule NAME FROM TO ON AT SAVE LETTER/S
Rule North Borneo  1935  1941  14 September UTC+07:20:00  UTC+00:20:00 Singapore Standard Time
Singapore Standard Time
Singapore Standard Time or Singapore Time based in Singapore uses a time zone eight hours in advance of UTC .- History :...


Rule North Borneo  1935  1941  15 December  UTC+07:20:00  UTC+00:20:00 Malaysia Standard Time

The daylight saving time from 14 September to 14 December in the years from 1935 to 1941 is very interesting. On 3 November the equation of time
Equation of time
The equation of time is the difference between apparent solar time and mean solar time. At any given instant, this difference will be the same for every observer...

 reaches a maximum of UTC+16:25. This seems to be an attempt at reducing the variation in the time of the sunrise by looking at how the analemma
Analemma
In astronomy, an analemma is a curve representing the angular offset of a celestial body from its mean position on the celestial sphere as viewed from another celestial body relative to the viewing body's celestial equator...

 rises in the tropics.

Sarawak
Sarawak
Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...

 use mean time (UTC+07:20) until February 1989 until it was joint to Malaysia, UTC+08:00 is used instead.

History

  • Prior to 1 January 1901 - locations in British Malaya
    British Malaya
    British Malaya loosely described a set of states on the Malay Peninsula and the Island of Singapore that were brought under British control between the 18th and the 20th centuries...

     with an Astronomical Observatory
    Time zone
    A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates , different places on the Earth need to have different clock times...

     would adopt the local mean time based on the Observatory's geographical position. Penang
    Penang
    Penang is a state in Malaysia and the name of its constituent island, located on the northwest coast of Peninsular Malaysia by the Strait of Malacca. It is bordered by Kedah in the north and east, and Perak in the south. Penang is the second smallest Malaysian state in area after Perlis, and the...

    , Malacca
    Malacca
    Malacca , dubbed The Historic State or Negeri Bersejarah among locals) is the third smallest Malaysian state, after Perlis and Penang. It is located in the southern region of the Malay Peninsula, on the Straits of Malacca. It borders Negeri Sembilan to the north and the state of Johor to the south...

     and Singapore all had their own observatories; hence, the three Straits Settlements
    Straits Settlements
    The Straits Settlements were a group of British territories located in Southeast Asia.Originally established in 1826 as part of the territories controlled by the British East India Company, the Straits Settlements came under direct British control as a crown colony on 1 April 1867...

     had their respective Local Mean Time, with minutes of differences amongst the three locations.

  • 1901 - On 1 January 1901 an Singapore Local Mean Time
    Singapore Standard Time
    Singapore Standard Time or Singapore Time based in Singapore uses a time zone eight hours in advance of UTC .- History :...

     (Singapore Mean Time
    Singapore Standard Time
    Singapore Standard Time or Singapore Time based in Singapore uses a time zone eight hours in advance of UTC .- History :...

    ) was adopted by Straits Settlements and Federated Malay States
    Federated Malay States
    The Federated Malay States was a federation of four protected states in the Malay Peninsula—Selangor, Perak, Negeri Sembilan and Pahang—established by the British government in 1895, which lasted until 1946, when they, together with the Straits Settlements and the Unfederated Malay...

     as the Standard Time
    Time zone
    A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates , different places on the Earth need to have different clock times...

    . This was introduced because railway, postal
    Postal
    Postal may refer to:* Mail, the postal service* The Postal Service, a band* "Going postal", the U.S. slang phrase meaning a killing spree* Going Postal, a 2004 Discworld novel by Terry Pratchett...

     and telegraph services were becoming more common and a single standard time will ease scheduling problems. 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...

     was chosen because it was the administrative HQ for the SS and the FMS then.
  • 1905 - On 1 June 1905 the mean time of the 105th meridian
    105th meridian east
    The meridian 105° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole....

     was adopted by Straits Settlements and Federated Malay States
    Federated Malay States
    The Federated Malay States was a federation of four protected states in the Malay Peninsula—Selangor, Perak, Negeri Sembilan and Pahang—established by the British government in 1895, which lasted until 1946, when they, together with the Straits Settlements and the Unfederated Malay...

     as the new Standard Time. This decision was made way back in February
    February
    February is the second month of the year in the Julian and Gregorian calendars. It is the shortest month and the only month with fewer than 30 days. The month has 28 days in common years and 29 days in leap years...

     1904. The mean time of the 105th meridian is UTC+07:00 hours 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...

     (i.e. Local Mean Time over Greenwich Royal Observatory
    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...

     near London
    London
    London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

    , United Kingdom
    United Kingdom
    The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

    ). This Standard Time went into effect when the Time Ball on Fort Canning was completed and became operational on the same day.
  • 1920 - In 1920 a bill was introduced in the Straits Settlements Legislative Council to adopt “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...

    ” just like in United Kingdom
    United Kingdom
    The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

    . The proposed time was 30 min forward of the mean time of the 105th meridian east
    105th meridian east
    The meridian 105° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole....

    , i.e. UTC+07:30 hours 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...

    . The reason for proposing this was to allow more leisure time for the labourers after work. This bill was dropped after the first reading.
  • 1932 – 12 years after the 1920 introduction of the “Daylight Saving Bill” the same bill was reintroduced to the Legislative Council. One of the original reasons for dropping the 1920 Bill was the argument that 30 minutes was too much change. Therefore
    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...

     in 1932 the proposed shift was reduced by 10 minutes, down to 20 minutes ahead of the mean time of the 105th meridian
    105th meridian east
    The meridian 105° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole....

    . This was a compromise, which was perceived to be more acceptable to the overly cautious Legislative Council
    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...

     members. After 2 debating sessions, this Bill was passed and became Ordinance No. 21 of 1932. The short title was Daylight Saving Ordinance
    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...

    , 1932. This was to come into force on the first day of January
    January
    January is the first month of the year in the Julian and Gregorian calendars and one of seven months with the length of 31 days. The first day of the month is known as New Year's Day...

     1933 and was to be in force during the year 1933.
  • 1933 - 1 January 1933, the Daylight Saving Ordinance
    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...

     came into effect on 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...

    . This Ordinance as passed was in effect for the year 1933 only. 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...

     was 20 minutes faster than Standard Time
    Time zone
    A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates , different places on the Earth need to have different clock times...

     i.e. UTC+07:20 hours minutes 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...

    .
  • 1934-1935 - For the years 1934 and 1935 the Daylight Saving Ordinance
    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...

     in 1932 was extended throughout both years by Gazette Notifications
    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...

    .
  • 1935 - In 1935, the Daylight Saving Ordinance
    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...

     in 1932 was amended by Ordinance No. 5 of 1935—The Daylight Saving (Amendment) Ordinance
    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...

    , 1935. The year limit 1933 was removed, turning the ordinance into permanent effect without the need for the Governor
    Governor
    A governor is a governing official, usually the executive of a non-sovereign level of government, ranking under the head of state...

     to declare any extensions. The time of UTC+07:20 hours 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...

     became permanent “Standard Time” with this amendment. The Survey Department
    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...

     since 1935 by Annual Report
    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...

     advised readers to adjust their clocks appropriately by 20 minutes for the year 1936.
  • 1936 - The Daylight Saving Ordinance
    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...

     became Chapter 170
    Time zone
    A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates , different places on the Earth need to have different clock times...

     in the 1936 Edition of The Laws of the Straits Settlements.
  • 1941 - In 1941, the Daylight Saving Ordinance
    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...

     was amended yet again by Ordinance 33 of 1941
    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...

    . 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...

     would henceforth be 30 min ahead of the mean time of the 105th meridian
    105th meridian east
    The meridian 105° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole....

     (10 min more than the original DST), i.e. UTC+07:30 hours 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...

    . This came into effect on 1 September 1941. Interesting to note that this was the original DST proposed in 1920 and was met with much opposition then.
  • 1942 - 16 February 1942, Japanese
    Empire of Japan
    The Empire of Japan is the name of the state of Japan that existed from the Meiji Restoration on 3 January 1868 to the enactment of the post-World War II Constitution of...

     formally occupied British Malaya
    United Kingdom
    The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

    . British Malayan
    United Kingdom
    The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

     time moved ahead by 1 hour 30 minutes to conform with Tokyo Standard Time
    Time in Japan
    Time in Japan is given by Japan Standard Time , which is nine hours ahead of UTC, i.e. UTC+09.Japan started using the Gregorian calendar on 1 January 1873, locally known as "the first day of the first month of Meiji 6"...

     which is UTC+09:00 hours 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...

    .
  • 1945 - 12 September 1945, Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

    ese formally surrendered in 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...

    . British Malayan
    United Kingdom
    The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

     time reverted to “Pre-invasion” standard: UTC+07:30 hours 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...

    . The exact dates for the change to and from Tokyo
    Tokyo
    , ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

     Standard Time have not been ascertained yet. The dates given here are based on educated speculation.

Standardisation of time in Malaysia

Malaysia declared that people in West Malaysia would move their clocks ahead by 30 min to match the time in use in East Malaysia
East Malaysia
East Malaysia, also known as Malaysian Borneo, is the part of Malaysia located on the island of Borneo. It consists of the Malaysian states of Sabah and Sarawak, and the Federal Territory of Labuan. It lies to the east from Peninsular Malaysia , which is located on the Malay Peninsula. The two are...

 (UTC+08:00 hrs an UTC+08:00:00 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...

) in 31 December 1981. However many found this to be awkward as most of Malaysia (roughly 80%) live in West Malaysia rather than in East Malaysia
East Malaysia
East Malaysia, also known as Malaysian Borneo, is the part of Malaysia located on the island of Borneo. It consists of the Malaysian states of Sabah and Sarawak, and the Federal Territory of Labuan. It lies to the east from Peninsular Malaysia , which is located on the Malay Peninsula. The two are...

. The time was switched on 1 January 1982 at 6:00 am (old time) to 6:30 am (new time).

Timekeeper

On 1 January 1990, the Malaysian Cabinet appointed the National Metrology Laboratory
Sirim
SIRIM Berhad, formerly known as the Standards and Industrial Research Institute of Malaysia , is a corporate organisation owned wholly by the Malaysian Government, under the Minister of Finance Incorporated...

 (SIRIM
Sirim
SIRIM Berhad, formerly known as the Standards and Industrial Research Institute of Malaysia , is a corporate organisation owned wholly by the Malaysian Government, under the Minister of Finance Incorporated...

) as the official timekeeper of Malaysia. The Malaysian Standard Time is derived from five atomic clocks maintained by SIRIM
Sirim
SIRIM Berhad, formerly known as the Standards and Industrial Research Institute of Malaysia , is a corporate organisation owned wholly by the Malaysian Government, under the Minister of Finance Incorporated...

.

External links

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