Oct 21, 1979, 3:30 am
| Start DST: | Sunday, April 13, 1947 — 1 hour forward |
|---|---|
| End DST: | Sunday, November 30, 1947 — 1 hour backward |
Apr 13
Forward 1 hour
Apr 13, 1947 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, April 13, 1947, 3:30:00 am clocks were turned forward 1 hour to
Sunday, April 13, 1947, 4:30:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Apr 13, 1947 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.
Nov 30
Back 1 hour
Nov 30, 1947 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, November 30, 1947, 4:30:00 am clocks were turned backward 1 hour to
Sunday, November 30, 1947, 3:30:00 am local standard time instead.
Sunrise and sunset were about 1 hour earlier on Nov 30, 1947 than the day before. There was more light in the morning and less light in the evening.
Also called Fall Back and Winter Time.
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. | ||