Time in Japan is given by Japan Standard Time (JST), which is nine hours ahead of UTC, i.e. UTC+09.
Japan started using the Gregorian calendar on 1 January 1873,[1] locally known as "the first day of the first month of Meiji 6" (明治6年1月1日). The preceding day, 31 December 1872, was "the second day of the twelfth month of Meiji 5" (明治5年12月2日).
The lunisolar Japanese calendar is no longer used except in very limited unofficial purposes, in which case 135°E longitude is the modern reference point also used for Japan Standard Time (UTC+09), as opposed to Kyoto as the ancient reference point and the national capital until 1868.
Japanese eras are still in use.
Ordinance 51 (1886) established standard time in Japan. Ordinance 167 (1895) renamed "standard time" to "central standard time" and established a new time zone "western standard time" at 120°E, for use in Taiwan. But western standard time was abolished by ordinance 529 (1937) and all areas occupied by Japan observed JST until the end of World War II.
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.[2] More recently there have been efforts to bring back DST in Japan, but so far this has not happened.[3]
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