Jan 21, 1974, 12:00 midnight
| End DST: | Tuesday, January 19, 1971 — 0:30 hours backward |
|---|---|
| Start DST: | Sunday, October 31, 1971 — 0:30 hours forward |
Jan 20
Back 0:30 hours
Jan 20, 1971 - Daylight Saving Time Ended
When local daylight time was about to reach
Wednesday, January 20, 1971, 12:00:00 midnight clocks were turned backward 0:30 hours to
Tuesday, January 19, 1971, 11:30:00 pm local standard time instead.
Also called Fall Back and Winter Time.
Oct 31
Forward 0:30 hours
Oct 31, 1971 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, October 31, 1971, 12:00:00 midnight clocks were turned forward 0:30 hours to
Sunday, October 31, 1971, 12:30:00 am local daylight time instead.
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) |
|---|---|---|
| 1970 | Saturday, February 21, 12:00 midnight | Sunday, October 25, 12:00 midnight |
| 1971 | Wednesday, January 20, 12:00 midnight | Sunday, October 31, 12:00 midnight |
| 1972 | Friday, January 21, 12:00 midnight | Sunday, October 29, 12:00 midnight |
| 1973 | Sunday, January 21, 12:00 midnight | Sunday, October 28, 12:00 midnight |
| 1974 | Monday, January 21, 12:00 midnight | No DST Start |
| 1975 — 1979 | DST not observed | |
| All times are local for 18°53'46.9"N, 70°29'47.7"W. | ||
Data for the years before 1970 is not available for 18°53'46.9"N, 70°29'47.7"W, however, we have earlier time zone history for Santo Domingo available.
Detailed time zone and clock changes in 18°53'46.9"N, 70°29'47.7"W