Last change: 2009
Mar
8
1 hour Back
Mar 8, 2009, 12:00 midnight
| Start DST: | Sunday, October 3, 1999 — No time change due to simultaneous time zone change |
|---|

Oct 3
No change
Oct 3, 1999 - Daylight Saving Time Started
DST started on Sunday, October 3, 1999, 12:00:00 midnight. However, clocks were not changed because 35°22'43.2"S, 65°10'23.0"W switched time zones at the same 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 | Wednesday, March 14, 12:00 midnight | Monday, October 15, 12:00 midnight |
| 1991 | Friday, March 1, 12:00 midnight | No DST Start |
| 1992 — 1998 | DST not observed | |
| 1999 | No DST End | Sunday, October 3, 12:00 midnight |
| All times are local for 35°22'43.2"S, 65°10'23.0"W. | ||
Data for the years before 1970 is not available for 35°22'43.2"S, 65°10'23.0"W, however, we have earlier time zone history for San Luis available.
Detailed time zone and clock changes in 35°22'43.2"S, 65°10'23.0"W