Mar 16, 2008, 12:00 midnight
Mar 1
Back 2 hours
Mar 1, 1991 - Daylight Saving Time Ended
When local daylight time was about to reach
Friday, March 1, 1991, 12:00:00 midnight clocks were turned backward 2 hours to
Thursday, February 28, 1991, 10:00:00 pm local standard time instead.
Also called Fall Back and Winter Time.
May 7
Forward 1 hour
May 7, 1991 - Time Zone Change (WART → ART)
When local standard time was about to reach
Tuesday, May 7, 1991, 12:00:00 midnight clocks were turned forward 1 hour to
Tuesday, May 7, 1991, 1:00:00 am local standard time instead.
Sunrise and sunset were about 1 hour later on May 7, 1991 than the day before. There was more light in the evening and less light in the morning.
Oct 20
Forward 1 hour
Oct 20, 1991 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, October 20, 1991, 12:00:00 midnight clocks were turned forward 1 hour to
Sunday, October 20, 1991, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Oct 20, 1991 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 History in San Juan
- San Juan last observed Daylight Saving Time in 2008.
- San Juan has observed DST for 51 years between 1930 and 2008.
- See Worldwide DST Statistics