When local daylight time is about to reach Midnight between Saturday, March 17, 1990 and Sunday, March 18, 1990 clocks are turned backward 1 hour to Saturday, March 17, 1990 at 11:00:00 PM local standard time instead
Seconds before and after the change:
Local time
DST?
UTC offset
Zone name
Saturday, March 17, 1990 at 11:59:57 PM
1 hour
-3 hours
CLST
Saturday, March 17, 1990 at 11:59:58 PM
1 hour
-3 hours
CLST
Saturday, March 17, 1990 at 11:59:59 PM
1 hour
-3 hours
CLST
Saturday, March 17, 1990 at 11:00:00 PM
No
-4 hours
CLT
Saturday, March 17, 1990 at 11:00:01 PM
No
-4 hours
CLT
Saturday, March 17, 1990 at 11:00:02 PM
No
-4 hours
CLT
Daylight Saving Time started
When local standard time is about to reach Midnight between Saturday, September 15, 1990 and Sunday, September 16, 1990 clocks are turned forward 1 hour to Sunday, September 16, 1990 at 1:00:00 AM local daylight time instead
