**** Korea Standard Time ****
    ( KST = UT + 9 )

    Standard Longitude     Period Related articles of regulations
    127.5 deg. E 1908 Apr. 1 - 1911 Dec. 31 The Official Gazette No. 3994 (Imperial decree No.5)
    135 deg. E 1912 Jan. 1 - 1954 Mar. 20 The newsletter of the (Japanese) Government-General of Korea No. 367 (Notification No.338)
    127.5 deg. E 1954 Mar. 21 - 1961 Aug. 9 Presidential decree No. 867 (1954/ 3/ 17)
    135 deg. E 1961 Aug. 10 - present Legislation No. 676 (1961/ 08/ 07)
    Legislation No. 3919 (1986/ 12/ 31)