Oct 30, 2022, 2:00 am
| Start DST: | Sunday, February 5, 1939 — 1 hour forward |
|---|---|
| End DST: | Saturday, June 24, 1939 — 1 hour backward |
Feb 5
Forward 1 hour
Feb 5, 1939 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, February 5, 1939, 12:00:00 midnight clocks were turned forward 1 hour to
Sunday, February 5, 1939, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Feb 5, 1939 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.
Jun 25
Back 1 hour
Jun 25, 1939 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, June 25, 1939, 12:00:00 midnight clocks were turned backward 1 hour to
Saturday, June 24, 1939, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Jun 25, 1939 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 — 1930 | DST not observed | |
| 1931 | Friday, May 1, 11:00 pm | Thursday, October 1, 12:00 midnight |
| 1932 — 1938 | DST not observed | |
| 1939 | Sunday, February 5, 12:00 midnight | Sunday, June 25, 12:00 midnight |
| 1940 | Monday, December 9, 12:00 midnight | No DST End |
| 1941 | No DST Start | Tuesday, April 1, 12:00 midnight |
| 1942 | DST not observed | |
| 1943 | Thursday, December 16, 12:00 midnight | No DST End |
| 1944 | No DST Start | Monday, May 1, 12:00 midnight |
| 1945 — 1949 | DST not observed | |
| All times are local for Mexico City. | ||