Historically distinct IANA time zone

Asia/Hong_Kong

Canonical IANA identifier · Data release 2026c

Local time now +08:00 HKT · current offset

Countries: Hong Kong
GPS reference: 22.28° N, 114.15° E
Data source: IANA asia
Aliases: Hongkong
Rule groups

Geographic context

Where this clock belongs

The map marks the IANA reference location and associated country, not a time-zone boundary.

World location

Regional context

GPS reference: 22.28° N, 114.15° E. Associated countries: HK.

The Wikipedia link provides additional context; it is not evidence for a historical claim. Transition data comes from the IANA source file.

Civil-time record

Recorded changes over time

From 1904 to 1979 · 69 recorded transitions

Show period

Recurring daylight-saving changes are grouped separately when JavaScript is available.

Notable changes

One-off changes and transitions outside the recurring seasonal rhythm.

1904-10-30 01:00+08:00 · HKTStandard time applies
1941-06-15 04:00+09:00 · HKSTDaylight saving time begins
1941-10-01 03:30+08:30 · HKWTDaylight saving time begins
1941-12-25 00:30+09:00 · JSTStandard time applies
1945-11-18 01:00+08:00 · HKTStandard time applies
1946-04-21 01:00+09:00 · HKSTDaylight saving time begins

Browse every recorded transition

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Local time after transition	Offset after	Abbreviation	Rule
1904-10-30 01:00	+08:00	HKT	Standard time
1941-06-15 04:00	+09:00	HKST	Daylight saving time
1941-10-01 03:30	+08:30	HKWT	Daylight saving time
1941-12-25 00:30	+09:00	JST	Standard time
1945-11-18 01:00	+08:00	HKT	Standard time
1946-04-21 01:00	+09:00	HKST	Daylight saving time
1946-12-01 03:30	+08:00	HKT	Standard time
1947-04-13 04:30	+09:00	HKST	Daylight saving time
1947-11-30 03:30	+08:00	HKT	Standard time
1948-05-02 04:30	+09:00	HKST	Daylight saving time
1948-10-31 03:30	+08:00	HKT	Standard time
1949-04-03 04:30	+09:00	HKST	Daylight saving time
1949-10-30 03:30	+08:00	HKT	Standard time
1950-04-02 04:30	+09:00	HKST	Daylight saving time
1950-10-29 03:30	+08:00	HKT	Standard time
1951-04-01 04:30	+09:00	HKST	Daylight saving time
1951-10-28 03:30	+08:00	HKT	Standard time
1952-04-06 04:30	+09:00	HKST	Daylight saving time
1952-11-02 03:30	+08:00	HKT	Standard time
1953-04-05 04:30	+09:00	HKST	Daylight saving time
1953-11-01 02:30	+08:00	HKT	Standard time
1954-03-21 04:30	+09:00	HKST	Daylight saving time
1954-10-31 02:30	+08:00	HKT	Standard time
1955-03-20 04:30	+09:00	HKST	Daylight saving time
1955-11-06 02:30	+08:00	HKT	Standard time
1956-03-18 04:30	+09:00	HKST	Daylight saving time
1956-11-04 02:30	+08:00	HKT	Standard time
1957-03-24 04:30	+09:00	HKST	Daylight saving time
1957-11-03 02:30	+08:00	HKT	Standard time
1958-03-23 04:30	+09:00	HKST	Daylight saving time
1958-11-02 02:30	+08:00	HKT	Standard time
1959-03-22 04:30	+09:00	HKST	Daylight saving time
1959-11-01 02:30	+08:00	HKT	Standard time
1960-03-20 04:30	+09:00	HKST	Daylight saving time
1960-11-06 02:30	+08:00	HKT	Standard time
1961-03-19 04:30	+09:00	HKST	Daylight saving time
1961-11-05 02:30	+08:00	HKT	Standard time
1962-03-18 04:30	+09:00	HKST	Daylight saving time
1962-11-04 02:30	+08:00	HKT	Standard time
1963-03-24 04:30	+09:00	HKST	Daylight saving time
1963-11-03 02:30	+08:00	HKT	Standard time
1964-03-22 04:30	+09:00	HKST	Daylight saving time
1964-11-01 02:30	+08:00	HKT	Standard time
1965-04-18 04:30	+09:00	HKST	Daylight saving time
1965-10-17 02:30	+08:00	HKT	Standard time
1966-04-17 04:30	+09:00	HKST	Daylight saving time
1966-10-16 02:30	+08:00	HKT	Standard time
1967-04-16 04:30	+09:00	HKST	Daylight saving time
1967-10-22 02:30	+08:00	HKT	Standard time
1968-04-21 04:30	+09:00	HKST	Daylight saving time
1968-10-20 02:30	+08:00	HKT	Standard time
1969-04-20 04:30	+09:00	HKST	Daylight saving time
1969-10-19 02:30	+08:00	HKT	Standard time
1970-04-19 04:30	+09:00	HKST	Daylight saving time
1970-10-18 02:30	+08:00	HKT	Standard time
1971-04-18 04:30	+09:00	HKST	Daylight saving time
1971-10-17 02:30	+08:00	HKT	Standard time
1972-04-16 04:30	+09:00	HKST	Daylight saving time
1972-10-22 02:30	+08:00	HKT	Standard time
1973-04-22 04:30	+09:00	HKST	Daylight saving time
1973-10-21 02:30	+08:00	HKT	Standard time
1973-12-30 04:30	+09:00	HKST	Daylight saving time
1974-10-20 02:30	+08:00	HKT	Standard time
1975-04-20 04:30	+09:00	HKST	Daylight saving time
1975-10-19 02:30	+08:00	HKT	Standard time
1976-04-18 04:30	+09:00	HKST	Daylight saving time
1976-10-17 02:30	+08:00	HKT	Standard time
1979-05-13 04:30	+09:00	HKST	Daylight saving time
1979-10-21 02:30	+08:00	HKT	Standard time