An Imperial Ordinance issued on December 27, Meiji 28 (1895)

Japan Standard Time or JST (日本標準時 or 中央標準時) is the standard timezone of Japan, and is 9 hours ahead of UTC. For a topic outline on this subject see List of basic Japan topics. UTC+9 is a Time zone used for the following locations Single-zone Countries East Timor Japan (JST— Japan For example, when it is midnight (00:00) in UTC, it is 9 am (09:00) in Japan Standard Time. There is no daylight saving time, though its introduction has been debated several times. Daylight saving time ( DST Japan Standard Time is the same as Korea Standard Time, Indonesian Eastern Standard Time and Yakutsk Time. Korea Standard Time (KST Korean: ko 한국 표준시 ko 韓國標準時 Han-guk pyojunsi is the standard time zone in North and South Korea and is 9 hours In Indonesia, the keeping of standard time is divided into three Time zones Indonesian Western Standard Time ( Indonesian: Waktu Indonesia During World War II, it was often called Tokyo Standard Time in Western contexts. World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including

History

Before the Meiji era (1868–1912), each local region had its own timezone in which noon was set to when the sun is exactly at its zenith. The, or Meiji era, denotes the 45-year reign of the Meiji Emperor, running in the Gregorian calendar, from 23 October 1868 to 30 July The Sun (Sol is the Star at the center of the Solar System. As modern transportation like trains were adopted, this practice started to cause confusion. For example, there is a difference of about 5 degrees in terms of longitude between Tokyo and Osaka and because of this, a train that departed from Tokyo would arrive at Osaka 20 minutes ahead of the time in Tokyo. Longitude (ˈlɒndʒɪˌtjuːd or ˈlɒŋgɪˌtjuːd symbolized by the Greek character Lambda (λ is the east-west Geographic coordinate measurement officially, is one of the 47 prefectures of Japan and located on the eastern side of the main island Honshū. is a city in Japan, located at the mouth of the Yodo River on Osaka Bay, in the Kansai region of the main island of Honshū In 1886, Ordinance 51 was issued in response to this problem, which stated:

明治十九年勅令第五十一号（本初子午線経度計算方及標準時ノ件）
（明治十九年七月十三日勅令第五十一号）

• 英国グリニツチ天文台子午儀ノ中心ヲ経過スル子午線ヲ以テ経度ノ本初子午線トス
• 経度ハ本初子午線ヨリ起算シ東西各百八十度ニ至リ東経ヲ正トシ西経ヲ負トス
• 明治二十一年一月一日ヨリ東経百三十五度ノ子午線ノ時ヲ以テ本邦一般ノ標準時ト定ム

According to this, the standard time (標準時, Hyōjunji^?) was set 9 hours ahead of GMT (UTC had not been established yet. Year 1886 ( MDCCCLXXXVI) was a Common year starting on Friday (link will display the full calendar of the Gregorian calendar (or a Common Greenwich Mean Time ( GMT) is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London ) In the ordinance, the first clause mentions GMT, the second defines east longitude and west longitude and the third says the standard timezone would be in effect from 1888. Year 1888 ( MDCCCLXXXVIII) was a Leap year starting on Sunday (click on link for calendar of the Gregorian calendar (or a Coincidentally, the city of Akashi in Hyōgo Prefecture is located exactly on 135 degrees east longitude and subsequently become known as Toki no machi (Town of Time). is a city located in southern Hyōgo Prefecture, Japan, on the Inland Sea west of Kobe. WikipediaWikiProject Japanese prefectures for guidelines --> is a prefecture of Japan located in the Kinki region on Honshū Island

With the annexation of Taiwan in 1895, Ordinance 167 was issued to rename the previous Standard Time to Central Standard Time (中央標準時, Chūō Hyōjunji^?) and establish new Western Standard Time (西部標準時, Seibu Hyōjunji^?) at 120° longitude. Year 1895 ( MDCCCXCV) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar (or a Common year Western Standard Time, which was used in Taiwan and some parts of Okinawa, was abolished by ordinance 529 in 1937. is one of Japan 's southern prefectures, and consists of hundreds of the Ryukyu Islands in a chain over 1000 km long which extends southwest from Kyūshū Territories occupied by Japan during World War II, including Singapore and Malaya, adopted Japan Standard Time for the duration of their occupation, but reverted after Japan's surrender. Singapore uses a time zone eight hours in advance of UTC, ( UTC+8) Malaysian Standard Time (MST Malay: Waktu Piawai Malaysia is a Standard time used in Malaysia.

In 1948–1951 occupied Japan observed daylight saving time (DST) from the first Sunday in May at 02:00 to the second Saturday in September at 02:00, except that the 1949 spring-forward transition was the first Sunday in April. At the end of World War II, Japan was occupied by the Allied Powers, led by the United States with contributions also from Australia, British Daylight saving time ( DST ^[1] More recently there have been efforts to bring back DST in Japan, but so far this has not happened. ^[2]

References

See also

• Japanese calendar
• UTC+9
• Japanese clock