Japan standard time
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.
All cities in Japan fall within this time zone, originally established by Akashi, located exactly on 135 degrees east longitude. The time zone has no daylight saving time.
Japan Standard Time is the same as Korea Standard Time.
History
Standard Time (標準時) using 135° longitude was introduced in 1888. 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). Western Standard Time was used in Taiwan and some part of Okinawa, until 1937.
See also: Timezone, GMT, UTC
