Korea Standard Time

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Korea Standard Time (KST; Korean: 한국 표준시 ; Hanja: 韓國標準時 ; Han-guk pyojunsi) is the standard time zone in North and South Korea and is 9 hours ahead of UTC (UTC+09:00): i.e., when it is midnight (00:00) UTC, it is 9 am (09:00) Korea Standard Time. Korea does not currently observe daylight saving time but did experiment with it during the 1988 Seoul Olympics.[1][2]Korea Standard Time is the same as Japan Standard Time, Indonesian Eastern Standard Time and Yakutsk Time.


The Korean Empire adopted a standard time of 8.5 hours ahead of UTC. In 1912, following the introduction of Imperial Japanese rule, the colonial government changed this to UTC+09:00 to align with Japan Standard Time. In 1954 it was reverted to UTC+08:30 and then in 1961, it was changed to UTC+09:00 again.[3]

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