Oct 21, 1979, 3:30 am
| Start DST: | Sunday, June 15, 1941 — 1 hour forward |
|---|---|
| Decrease DST: | Wednesday, October 1, 1941 — 0:30 hours backward |
Jun 15
Forward 1 hour
Jun 15, 1941 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, June 15, 1941, 3:00:00 am clocks were turned forward 1 hour to
Sunday, June 15, 1941, 4:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Jun 15, 1941 than the day before. There was more light in the evening and less light in the morning.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Oct 1
Back 0:30 hours
Oct 1, 1941 - Daylight Saving Time Decreased
Double DST ended – Clocks were turned back from double DST (2 hours ahead of standard time) to DST (1 hour ahead of standard time).
When local daylight time was about to reach
Wednesday, October 1, 1941, 4:00:00 am clocks were turned backward 0:30 hours to
Wednesday, October 1, 1941, 3:30:00 am local daylight time instead.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Dec 25
Forward 0:30 hours
Dec 25, 1941 - Daylight Saving Time Ended
When local daylight time was about to reach
Thursday, December 25, 1941, 12:00:00 midnight clocks were turned forward 0:30 hours to
Thursday, December 25, 1941, 12:30:00 am local standard time instead.
Also called Fall Back and Winter Time.
Note that the above information is preliminary: Different sources disagree on the date. The date might be updated or changed once we have reliable information.
Daylight Saving Time in Other Years
DST changes do not necessarily occur on the same date every year.
| Year | DST Start (Clock Forward) | DST End (Clock Backward) |
|---|---|---|
| 1925 — 1940 | DST not observed | |
| * 1941 | Sunday, June 15, 3:00 am | Thursday, December 25, 12:00 midnight (Probable date) |
| 1942 — 1945 | DST not observed | |
| 1946 | Sunday, April 21, 12:00 midnight | Sunday, December 1, 4:30 am |
| 1947 | Sunday, April 13, 3:30 am | Sunday, November 30, 4:30 am |
| 1948 | Sunday, May 2, 3:30 am | Sunday, October 31, 4:30 am |
| 1949 | Sunday, April 3, 3:30 am | Sunday, October 30, 4:30 am |
| All times are local for Hong Kong. * All or part of this period was on double DST. | ||