15 Mar 2009, 00:00
| End DST: | Saturday, 3 March 1990 — 1 hour backward |
|---|---|
| Start DST: | Sunday, 21 October 1990 — 1 hour forward |
4 Mar
Back 1 hour
4 Mar 1990 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, 4 March 1990, 00:00:00 clocks were turned backward 1 hour to
Saturday, 3 March 1990, 23:00:00 local standard time instead.
Sunrise and sunset were about 1 hour earlier on 4 Mar 1990 than the day before. There was more light in the morning and less light in the evening.
Also called Fall Back and Winter Time.
21 Oct
Forward 1 hour
21 Oct 1990 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, 21 October 1990, 00:00:00 clocks were turned forward 1 hour to
Sunday, 21 October 1990, 01:00:00 local daylight time instead.
Sunrise and sunset were about 1 hour later on 21 Oct 1990 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) |
|---|---|---|
| 1990 | Sunday, 4 March, 00:00 | Sunday, 21 October, 00:00 |
| 1991 | Sunday, 3 March, 00:00 | Sunday, 20 October, 00:00 |
| 1992 | Sunday, 1 March, 00:00 | Sunday, 18 October, 00:00 |
| 1993 | Sunday, 7 March, 00:00 | No DST Start |
| 1994 — 1998 | DST not observed | |
| 1999 | No DST End | Sunday, 3 October, 00:00 |
| All times are local for Bahía Blanca. | ||
Data for the years before 1970 is not available for Bahía Blanca, however, we have earlier time zone history for Buenos Aires available.