15 Sep 1991, 02:00
| Start DST: | Saturday, 1 May 1948 — 1 hour forward |
|---|---|
| End DST: | Thursday, 30 September 1948 — 1 hour backward |
1 May
Forward 1 hour
1 May 1948 - Daylight Saving Time Started
When local standard time was about to reach
Saturday, 1 May 1948, 00:00:00 clocks were turned forward 1 hour to
Saturday, 1 May 1948, 01:00:00 local daylight time instead.
Sunrise and sunset were about 1 hour later on 1 May 1948 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.
1 Oct
Back 1 hour
1 Oct 1948 - Daylight Saving Time Ended
When local daylight time was about to reach
Friday, 1 October 1948, 00:00:00 clocks were turned backward 1 hour to
Thursday, 30 September 1948, 23:00:00 local standard time instead.
Sunrise and sunset were about 1 hour earlier on 1 Oct 1948 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) |
|---|---|---|
| 1925 — 1939 | DST not observed | |
| 1940 | Saturday, 1 June, 00:00 | Sunday, 13 October, 00:00 |
| 1941 | Saturday, 15 March, 00:00 | Sunday, 2 November, 00:00 |
| 1942 | Saturday, 31 January, 00:00 | No DST End |
| 1943 — 1944 | DST observed all year | |
| 1945 | No DST Start | Sunday, 2 September, 00:00 |
| 1946 | Wednesday, 15 May, 00:00 | Tuesday, 1 October, 00:00 |
| 1947 | Tuesday, 15 April, 00:00 | Saturday, 1 November, 00:00 |
| 1948 | Saturday, 1 May, 00:00 | Friday, 1 October, 00:00 |
| 1949 | Sunday, 1 May, 00:00 | Saturday, 28 May, 00:00 |
| All times are local for Shanghai. | ||