台灣日治時期
The first time zone standard in Taiwan was enforced on 1 January 1896, the second year of Taiwan under Japanese rule. The standard was called with time offset of , based on 120°E longitude. On 1 October 1937, the Western Standard Time zone was abolished and the , with time offset of , was enforced in the entire country of Japan including Taiwan. This time was used until the end of the Second World War. On 21 September 1945, the Governor-General of Taiwan announced that the order issued in 1937 was revoked. Time Memorial Day was observed every 10 June from 1921 to 1941, which led to an increase in the observance of an official time.