Mar 15, 2009, 12:00 midnight
| End DST: | Tuesday, March 31, 1931 — 1 hour backward |
|---|---|
| Start DST: | Thursday, October 15, 1931 — 1 hour forward |
Apr 1
Back 1 hour
Apr 1, 1931 - Daylight Saving Time Ended
When local daylight time was about to reach
Wednesday, April 1, 1931, 12:00:00 midnight clocks were turned backward 1 hour to
Tuesday, March 31, 1931, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Apr 1, 1931 than the day before. There was more light in the morning and less light in the evening.
Also called Fall Back and Winter Time.
Oct 15
Forward 1 hour
Oct 15, 1931 - Daylight Saving Time Started
When local standard time was about to reach
Thursday, October 15, 1931, 12:00:00 midnight clocks were turned forward 1 hour to
Thursday, October 15, 1931, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Oct 15, 1931 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 End (Clock Backward) | DST Start (Clock Forward) |
|---|---|---|
| 1925 — 1929 | DST not observed | |
| 1930 | No DST End | Monday, December 1, 12:00 midnight |
| 1931 | Wednesday, April 1, 12:00 midnight | Thursday, October 15, 12:00 midnight |
| 1932 | Tuesday, March 1, 12:00 midnight | Tuesday, November 1, 12:00 midnight |
| 1933 | Wednesday, March 1, 12:00 midnight | Wednesday, November 1, 12:00 midnight |
| 1934 | Thursday, March 1, 12:00 midnight | Thursday, November 1, 12:00 midnight |
| 1935 | Friday, March 1, 12:00 midnight | Friday, November 1, 12:00 midnight |
| 1936 | Sunday, March 1, 12:00 midnight | Sunday, November 1, 12:00 midnight |
| 1937 | Monday, March 1, 12:00 midnight | Monday, November 1, 12:00 midnight |
| 1938 | Tuesday, March 1, 12:00 midnight | Tuesday, November 1, 12:00 midnight |
| 1939 | Wednesday, March 1, 12:00 midnight | Wednesday, November 1, 12:00 midnight |
| 1940 | Friday, March 1, 12:00 midnight | Monday, July 1, 12:00 midnight |
| 1941 | Sunday, June 15, 12:00 midnight | Wednesday, October 15, 12:00 midnight |
| 1942 | DST observed all year | |
| 1943 | Sunday, August 1, 12:00 midnight | Friday, October 15, 12:00 midnight |
| 1944 — 1945 | DST observed all year | |
| 1946 | Friday, March 1, 12:00 midnight | Tuesday, October 1, 12:00 midnight |
| 1947 — 1949 | DST observed all year | |
| All times are local for Posadas. | ||