Sep 15, 1991, 2:00 am
| Start DST: | Sunday, April 15, 1990 — 1 hour forward |
|---|---|
| End DST: | Sunday, September 16, 1990 — 1 hour backward |
Apr 15
Forward 1 hour
Apr 15, 1990 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, April 15, 1990, 2:00:00 am clocks were turned forward 1 hour to
Sunday, April 15, 1990, 3:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Apr 15, 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.
Sep 16
Back 1 hour
Sep 16, 1990 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, September 16, 1990, 2:00:00 am clocks were turned backward 1 hour to
Sunday, September 16, 1990, 1:00:00 am local standard time instead.
Sunrise and sunset were about 1 hour earlier on Sep 16, 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.
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) |
|---|---|---|
| 1990 | Sunday, April 15, 2:00 am | Sunday, September 16, 2:00 am |
| 1991 | Sunday, April 14, 2:00 am | Sunday, September 15, 2:00 am |
| 1992 — 1999 | DST not observed | |
| All times are local for 23°11'31"N, 113°20'05"E. | ||
Data for the years before 1970 is not available for 23°11'31"N, 113°20'05"E, however, we have earlier time zone history for Shanghai available.
Detailed time zone and clock changes in 23°11'31"N, 113°20'05"E