Mar 8, 2015, 2:00 am
| Start DST: | Sunday, April 23, 1972 — 1 hour forward |
|---|---|
| End DST: | Saturday, July 15, 1972 — 1 hour backward |
Apr 23
Forward 1 hour
Apr 23, 1972 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, April 23, 1972, 12:00:00 midnight clocks were turned forward 1 hour to
Sunday, April 23, 1972, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Apr 23, 1972 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.
Jul 16
Back 1 hour
Jul 16, 1972 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, July 16, 1972, 12:00:00 midnight clocks were turned backward 1 hour to
Saturday, July 15, 1972, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Jul 16, 1972 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 | Saturday, April 25, 12:00 midnight | Sunday, June 14, 12:00 midnight |
| 1971 | DST not observed | |
| 1972 | Sunday, April 23, 12:00 midnight | Sunday, July 16, 12:00 midnight |
| 1973 | DST not observed | |
| * 1974 | Sunday, January 13, 12:00 midnight | Sunday, September 1, 12:00 midnight |
| 1975 | No DST Start | Sunday, March 30, 12:00 midnight |
| 1976 | Sunday, December 19, 12:00 midnight | No DST End |
| 1977 | Sunday, December 4, 12:00 midnight | Sunday, March 6, 12:00 midnight |
| 1978 | Sunday, December 17, 12:00 midnight | Sunday, March 5, 12:00 midnight |
| 1979 | Sunday, April 29, 12:00 midnight | Sunday, March 4, 12:00 midnight |
| All times are local for 30°11'29.4"S, 57°38'19.9"W. * All or part of this period was on double DST. | ||
Data for the years before 1970 is not available for 30°11'29.4"S, 57°38'19.9"W, however, we have earlier time zone history for Montevideo available.
Detailed time zone and clock changes in 30°11'29.4"S, 57°38'19.9"W