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

Japan Standard Time (日本標準時 or 中央標準時) is the standard timezone in Japan that is 9 hours ahead of UTC; i.e. when it is midnight (00:00) in UTC, it is 9 am (09:00) in Japan Standard Time. Short: UTC+9. During World War II, the standard was often called Tokyo Standard Time in Western contexts. Image File history File links by age File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links by age File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... TimeZone is an Internet forum for discussion of watches and horology. ... ... Coordinated Universal Time (UTC) is a high-precison atomic time standard. ... Japan Standard Time Korea Standard Time External links Find cities currently in UTC+9 Category: ...

The standard time observes no daylight saving time, though there has been constant debate whether to adopt it in order to increase leisure time. Though DST is common in Europe and North America, most of the worlds people do not use it. ...

Japan Standard Time is the same as Korea Standard Time. The Korea Standard Time (KST) is the standard timezone in North and South Korea and is 9 hours ahead of UTC (UTC+9): ie. ...

History

Wikisource has original text related to this article:

明治十九年勅令第五十一号

Before the Meiji Era, each local region had been using a timezone in which noon was set to when the sun is exactly at south. 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 Tokyo would arrive at Osaka at 20 minutes ahead of the time in Tokyo. In 1886 (Meiji 19), a chokurei (Imperial Ordinance) was issued in response to this problem, which states: Image File history File links Wikisource-logo. ... The original Wikisource logo. ... History of Japan Paleolithic Jomon Yayoi Yamato period ---Kofun period ---Asuka period Nara period Heian period Kamakura period Muromachi period Azuchi-Momoyama period ---Nanban period Edo period Meiji period Taisho period Showa period ---Japanese expansionism ---Occupied Japan ---Post-Occupation Japan Heisei The Meiji period (Japanese: Meiji Jidai 明治&#26178... The Sun is the star at the center of the Solar System. ... A compass rose with South highlighted South is most commonly a noun, adjective, or adverb indicating direction or geography. ... Longitude, sometimes denoted by the Greek letter λ (lambda),[1][2] describes the location of a place on Earth east or west of a north-south line called the Prime Meridian. ... This article or section does not cite its references or sources. ... Osaka )   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 HonshÅ«. The city is the capital of Osaka Prefecture. ... Year 1886 (MDCCCLXXXVI) was a common year starting on Friday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Sunday of the 12-day slower Julian calendar). ... Imperial ordinance is an ordinance issued by an Empire. ...

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) was set 9 hours ahead of GMT (UTC was not established yet.) 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. Coincidentally, a city of Akashi in Hyogo Prefecture is located exactly on 135 degrees east longitude and the city subsequently has become known as Toki no machi (town of time). For alternate meanings of GMT, see GMT (disambiguation). ... ... Year 1888 (MDCCCLXXXVIII) was a leap year starting on Sunday (click on link for calendar) of the Gregorian calendar (or a leap year starting on Tuesday of the 12-day slower Julian calendar). ... Akashi (明石市; -shi) is a city located in southern Hyogo, Japan, on the Inland Sea west of Kobe. ... Hyōgo Prefecture (兵庫県 Hyōgo-ken) is located in the Kinki region on Honshu island, Japan. ...

With annexation of Taiwan in 1895, Western Standard Time (西部標準時) was defined with 120° longitude, and the previous Standard Time was renamed to Central Standard Time (中央標準時). (See the picture on the right.) Western Standard Time was used in Taiwan and some part of Okinawa, until 1937. 1895 (MDCCCXCV) was a common year starting on Tuesday (see link for calendar) of the Gregorian calendar (or a common year starting on Thursday of the 12-day-slower Julian calendar). ... This article is about the prefecture. ... 1937 (MCMXXXVII) was a common year starting on Friday (link will take you to calendar). ...

Territories occupied by Japan during World War II, including Singapore and Malaya, adopted Japan Standard Time for the duration of the occupation, but reverted after Japan's surrender. // Malaysian Standard Time Malaysian Standard Time (MST) is a standard time used in Malaysia after Japan formally surrendered in Singapore after their occupation in British Malaya. ...

See also

• Timezone
• UTC
• GMT
• UTC+9

TimeZone is an Internet forum for discussion of watches and horology. ... ... For alternate meanings of GMT, see GMT (disambiguation). ... Japan Standard Time Korea Standard Time External links Find cities currently in UTC+9 Category: ...

References