Time Zone History

Hong Kong time zone history

Daylight saving time was used in 8 years since 1970, last in 1979; under the current rules the clocks no longer change. On standard time, clocks in Hong Kong run 23 minutes ahead of local mean solar time.

UTC+8

Standard time is UTC+8 (HKT) all year under the current rules.

tz database name Asia/Hong_Kong

Convert a time from Hong Kong

Summer time in 8 of 57 years since 1970

UTC+7:36:42: 23 minutes behind today’s standard timeUTC+8: today’s standard timeUTC+8:30: 30 minutes ahead of today’s standard timeUTC+9: 1 hour ahead of today’s standard timeUTC+7:36:42: 23 minutes behindtoday’s standard timeUTC+8: today’s standard timeUTC+8:30: 30 minutes ahead oftoday’s standard timeUTC+9: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

190019201940196019001940
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
October 30, 1904Local mean time (UTC+7:36:42) replacedUTC+8HKT
December 25, 1941Standard time forward 1 hourUTC+9JST
November 18, 1945Standard time back 1 hourUTC+8HKT

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1941June 15October 11 hour, HKT to HKST
1946April 21December 11 hour, HKT to HKST
1947April 13November 301 hour, HKT to HKST
1948May 2October 311 hour, HKT to HKST
1949–1951first Sunday in April, 03:30last Sunday in October, 04:301 hour, HKT to HKST
1952–1953first Sunday in April, 03:30first Sunday in November, 04:301 hour, HKT to HKST
1954March 21October 311 hour, HKT to HKST
1955–1956third Sunday in March, 03:30first Sunday in November, 03:301 hour, HKT to HKST
1957–1959fourth Sunday in March, 03:30first Sunday in November, 03:301 hour, HKT to HKST
1960–1962third Sunday in March, 03:30first Sunday in November, 03:301 hour, HKT to HKST
1963–1964fourth Sunday in March, 03:30first Sunday in November, 03:301 hour, HKT to HKST
1965–1966third Sunday in April, 03:30third Sunday in October, 03:301 hour, HKT to HKST
1967April 16October 221 hour, HKT to HKST
1968–1971third Sunday in April, 03:30third Sunday in October, 03:301 hour, HKT to HKST
Since 1970
1972April 16October 221 hour, HKT to HKST
1973April 22, December 30October 211 hour, HKT to HKST
1974not that yearOctober 201 hour, HKT to HKST
1975–1976third Sunday in April, 03:30third Sunday in October, 03:301 hour, HKT to HKST
1979May 13October 211 hour, HKT to HKST

Also on UTC+8

Macau, Taiwan, Philippines, Shanghai (China), Malaysia, Singapore, Ulaanbaatar (Mongolia), Makassar (Indonesia), Irkutsk (Russia) and Perth (Australia) (nearest first; 1 more on the list of offsets).

Clocks next door since 1970

  • Macau (63 km): same time every day.
  • Taiwan (809 km): same time except 1,134 days in 1970–1976 and 1979.
  • Philippines (1,117 km): same time except 1,801 days in 1970–1977, 1979 and 1990.
  • Shanghai (China) (1,231 km): same time except 2,449 days in 1970–1976, 1979 and 1986–1991.
  • Vietnam (1,509 km): usually 1 hour behind; different on 1,377 days in 1970–1976 and 1979.

How it compares

Standard time has stayed at UTC+8 since 1945.