Sep 15, 1991, 2:00 am
| Start DST: | Wednesday, May 15, 1946 — 1 hour forward |
|---|---|
| End DST: | Monday, September 30, 1946 — 1 hour backward |
May 15
Forward 1 hour
May 15, 1946 - Daylight Saving Time Started
When local standard time was about to reach
Wednesday, May 15, 1946, 12:00:00 midnight clocks were turned forward 1 hour to
Wednesday, May 15, 1946, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on May 15, 1946 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.
Oct 1
Back 1 hour
Oct 1, 1946 - Daylight Saving Time Ended
When local daylight time was about to reach
Tuesday, October 1, 1946, 12:00:00 midnight clocks were turned backward 1 hour to
Monday, September 30, 1946, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Oct 1, 1946 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, June 1, 12:00 midnight | Sunday, October 13, 12:00 midnight |
| 1941 | Saturday, March 15, 12:00 midnight | Sunday, November 2, 12:00 midnight |
| 1942 | Saturday, January 31, 12:00 midnight | No DST End |
| 1943 — 1944 | DST observed all year | |
| 1945 | No DST Start | Sunday, September 2, 12:00 midnight |
| 1946 | Wednesday, May 15, 12:00 midnight | Tuesday, October 1, 12:00 midnight |
| 1947 | Tuesday, April 15, 12:00 midnight | Saturday, November 1, 12:00 midnight |
| 1948 | Saturday, May 1, 12:00 midnight | Friday, October 1, 12:00 midnight |
| 1949 | Sunday, May 1, 12:00 midnight | Saturday, May 28, 12:00 midnight |
| All times are local for Shanghai. | ||