Nov 2, 2025, 2:00 am
| Start DST: | Sunday, April 25, 1971 — 1 hour forward |
|---|---|
| End DST: | Sunday, October 31, 1971 — 1 hour backward |
Apr 25
Forward 1 hour
Apr 25, 1971 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, April 25, 1971, 2:00:00 am clocks were turned forward 1 hour to
Sunday, April 25, 1971, 3:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Apr 25, 1971 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.
Oct 31
Back 1 hour
Oct 31, 1971 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, October 31, 1971, 2:00:00 am clocks were turned backward 1 hour to
Sunday, October 31, 1971, 1:00:00 am local standard time instead.
Sunrise and sunset were about 1 hour earlier on Oct 31, 1971 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) |
|---|---|---|
| 1970 | Sunday, April 26, 2:00 am | Sunday, October 25, 2:00 am |
| 1971 | Sunday, April 25, 2:00 am | Sunday, October 31, 2:00 am |
| 1972 | Sunday, April 30, 2:00 am | Sunday, October 29, 2:00 am |
| 1973 | Sunday, April 29, 2:00 am | Sunday, October 28, 2:00 am |
| 1974 | Sunday, January 6, 2:00 am | Sunday, October 27, 2:00 am |
| 1975 | Sunday, February 23, 2:00 am | Sunday, October 26, 2:00 am |
| 1976 | Sunday, April 25, 2:00 am | Sunday, October 31, 2:00 am |
| 1977 | Sunday, April 24, 2:00 am | Sunday, October 30, 2:00 am |
| 1978 — 1979 | DST not observed | |
| All times are local for Petersburg. | ||