Next change:
Mar
29
1 hour Forward
Mar 29, 2026, 2:00 am
| Start DST: | Wednesday, May 15, 1940 — 1 hour forward |
|---|
May 15
Forward 1 hour
May 15, 1940 - Daylight Saving Time Started
When local standard time was about to reach
Wednesday, May 15, 1940, 12:00:00 midnight clocks were turned forward 1 hour to
Wednesday, May 15, 1940, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on May 15, 1940 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.
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 — 1939 | DST not observed | |
| 1940 | Wednesday, May 15, 12:00 midnight | No DST End |
| 1941 | DST observed all year | |
| 1942 | No DST Start | Monday, November 2, 3:00 am |
| 1943 | Monday, March 29, 2:00 am | Monday, October 4, 3:00 am |
| 1944 | Monday, April 3, 2:00 am | Monday, October 2, 3:00 am |
| 1945 | Monday, April 2, 2:00 am | Wednesday, August 15, 3:00 am |
| 1946 | Wednesday, May 1, 2:00 am | Sunday, September 1, 3:00 am |
| 1947 | Sunday, May 4, 2:00 am | Sunday, August 10, 3:00 am |
| 1948 | Sunday, May 9, 2:00 am | Sunday, August 8, 3:00 am |
| 1949 | DST not observed | |
| All times are local for Copenhagen. | ||