15 Sep 1991, 02:00
| Start DST: | Sunday, 4 May 1986 — 1 hour forward |
|---|---|
| End DST: | Sunday, 14 September 1986 — 1 hour backward |
4 May
Forward 1 hour
4 May 1986 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, 4 May 1986, 02:00:00 clocks were turned forward 1 hour to
Sunday, 4 May 1986, 03:00:00 local daylight time instead.
Sunrise and sunset were about 1 hour later on 4 May 1986 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.
14 Sep
Back 1 hour
14 Sep 1986 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, 14 September 1986, 02:00:00 clocks were turned backward 1 hour to
Sunday, 14 September 1986, 01:00:00 local standard time instead.
Sunrise and sunset were about 1 hour earlier on 14 Sep 1986 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) |
|---|---|---|
| 1980 — 1985 | DST not observed | |
| 1986 | Sunday, 4 May, 02:00 | Sunday, 14 September, 02:00 |
| 1987 | Sunday, 12 April, 02:00 | Sunday, 13 September, 02:00 |
| 1988 | Sunday, 17 April, 02:00 | Sunday, 11 September, 02:00 |
| 1989 | Sunday, 16 April, 02:00 | Sunday, 17 September, 02:00 |
| All times are local for 31°11'13.4"N, 121°26'55.4"E. | ||
Data for the years before 1970 is not available for 31°11'13.4"N, 121°26'55.4"E, however, we have earlier time zone history for Shanghai available.
Detailed time zone and clock changes in 31°11'13.4"N, 121°26'55.4"E