Oct 31, 2010, 3:00 am
| Start DST: | Tuesday, February 15, 1921 — 1 hour forward |
|---|---|
| Increase DST: | Monday, March 21, 1921 — 1 hour forward |
Feb 14
Forward 1 hour
Feb 14, 1921 - Daylight Saving Time Started
When local standard time was about to reach
Monday, February 14, 1921, 11:00:00 pm clocks were turned forward 1 hour to
Tuesday, February 15, 1921, 12:00:00 midnight local daylight time instead.
Sunrise and sunset were about 1 hour later on Feb 15, 1921 than the day before. There was more light in the evening.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Mar 20
Forward 1 hour
Mar 20, 1921 - Daylight Saving Time Increased
Double DST – Clocks were turned ahead another hour when DST was already in force (2 hours ahead of standard time).
When local daylight time was about to reach
Sunday, March 20, 1921, 11:00:00 pm clocks were turned forward 1 hour to
Monday, March 21, 1921, 12:00:00 midnight local daylight time instead.
Sunrise and sunset were about 1 hour later on Mar 21, 1921 than the day before. There was more light in the evening.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Sep 1
Back 1 hour
Sep 1, 1921 - Daylight Saving Time Decreased
Double DST ended – Clocks were turned back from double DST (2 hours ahead of standard time) to DST (1 hour ahead of standard time).
When local daylight time was about to reach
Thursday, September 1, 1921, 12:00:00 midnight clocks were turned backward 1 hour to
Wednesday, August 31, 1921, 11:00:00 pm local daylight time instead.
Sunrise and sunset were about 1 hour earlier on Sep 1, 1921 than the day before. There was more light in the morning.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Oct 1
Back 1 hour
Oct 1, 1921 - Daylight Saving Time Ended
When local daylight time was about to reach
Saturday, October 1, 1921, 12:00:00 midnight clocks were turned backward 1 hour to
Friday, September 30, 1921, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Oct 1, 1921 than the day before. There was more light in the morning.
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) |
|---|---|---|
| 1900 — 1916 | DST not observed | |
| 1917 | Sunday, July 1, 11:00 pm | Friday, December 28, 12:00 midnight |
| * 1918 | Friday, May 31, 10:00 pm | No DST End |
| * 1919 | Saturday, May 31, 11:00 pm | Saturday, August 16, 12:00 midnight |
| 1920 | DST not observed | |
| * 1921 | Monday, February 14, 11:00 pm | Saturday, October 1, 12:00 midnight |
| 1922 — 1924 | DST not observed | |
| All times are local for Moscow. * All or part of this period was on double DST. | ||