Mar 29, 2026, 1:00 am
| Start DST: | Sunday, March 16, 1947 — 1 hour forward |
|---|---|
| Increase DST: | Sunday, April 13, 1947 — 1 hour forward |
Mar 16
Forward 1 hour
Mar 16, 1947 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, March 16, 1947, 2:00:00 am clocks were turned forward 1 hour to
Sunday, March 16, 1947, 3:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Mar 16, 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.
Apr 13
Forward 1 hour
Apr 13, 1947 - Daylight Saving Time Increased
Double DST – Clocks were turned ahead another hour when DST was already in force (2 hours ahead of standard time).
When local daylight time was about to reach
Sunday, April 13, 1947, 2:00:00 am clocks were turned forward 1 hour to
Sunday, April 13, 1947, 3:00:00 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.
Aug 10
Back 1 hour
Aug 10, 1947 - 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
Sunday, August 10, 1947, 3:00:00 am clocks were turned backward 1 hour to
Sunday, August 10, 1947, 2:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour earlier on Aug 10, 1947 than the day before. There was more light in the morning and less light in the evening.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Nov 2
Back 1 hour
Nov 2, 1947 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, November 2, 1947, 3:00:00 am clocks were turned backward 1 hour to
Sunday, November 2, 1947, 2:00:00 am local standard time instead.
Sunrise and sunset were about 1 hour earlier on Nov 2, 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 | Sunday, April 19, 2:00 am | Sunday, October 4, 3:00 am |
| 1926 | Sunday, April 18, 2:00 am | Sunday, October 3, 3:00 am |
| 1927 | Sunday, April 10, 2:00 am | Sunday, October 2, 3:00 am |
| 1928 | Sunday, April 22, 2:00 am | Sunday, October 7, 3:00 am |
| 1929 | Sunday, April 21, 2:00 am | Sunday, October 6, 3:00 am |
| 1930 | Sunday, April 13, 2:00 am | Sunday, October 5, 3:00 am |
| 1931 | Sunday, April 19, 2:00 am | Sunday, October 4, 3:00 am |
| 1932 | Sunday, April 17, 2:00 am | Sunday, October 2, 3:00 am |
| 1933 | Sunday, April 9, 2:00 am | Sunday, October 8, 3:00 am |
| 1934 | Sunday, April 22, 2:00 am | Sunday, October 7, 3:00 am |
| 1935 | Sunday, April 14, 2:00 am | Sunday, October 6, 3:00 am |
| 1936 | Sunday, April 19, 2:00 am | Sunday, October 4, 3:00 am |
| 1937 | Sunday, April 18, 2:00 am | Sunday, October 3, 3:00 am |
| 1938 | Sunday, April 10, 2:00 am | Sunday, October 2, 3:00 am |
| 1939 | Sunday, April 16, 2:00 am | Sunday, November 19, 3:00 am |
| 1940 | Sunday, February 25, 2:00 am | No DST End |
| * 1941 | Sunday, May 4, 2:00 am | No DST End |
| * 1942 | Sunday, April 5, 2:00 am | No DST End |
| * 1943 | Sunday, April 4, 2:00 am | No DST End |
| * 1944 | Sunday, April 2, 2:00 am | No DST End |
| * 1945 | Monday, April 2, 2:00 am | Sunday, October 7, 3:00 am |
| 1946 | Sunday, April 14, 2:00 am | Sunday, October 6, 3:00 am |
| * 1947 | Sunday, March 16, 2:00 am | Sunday, November 2, 3:00 am |
| 1948 | Sunday, March 14, 2:00 am | Sunday, October 31, 3:00 am |
| 1949 | Sunday, April 3, 2:00 am | Sunday, October 30, 3:00 am |
| All times are local for London. * All or part of this period was on double DST. |
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