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Clock Changes in Lisbon, Portugal (Lisboa) 1931

Next change:
Mar
29
1 hour Forward

Mar 29, 2026, 1:00 am

Start DST: Sunday, April 19, 1931 — 1 hour forward
End DST: Saturday, October 3, 1931 — 1 hour backward
Location of LisbonLocation

Apr 18

Forward 1 hour

Apr 18, 1931 - Daylight Saving Time Started

When local standard time was about to reach
Saturday, April 18, 1931, 11:00:00 pm clocks were turned forward 1 hour to
Sunday, April 19, 1931, 12:00:00 midnight local daylight time instead.

Sunrise and sunset were about 1 hour later on Apr 19, 1931 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 4

Back 1 hour

Oct 4, 1931 - Daylight Saving Time Ended

When local daylight time was about to reach
Sunday, October 4, 1931, 12:00:00 midnight clocks were turned backward 1 hour to
Saturday, October 3, 1931, 11:00:00 pm local standard time instead.

Sunrise and sunset were about 1 hour earlier on Oct 4, 1931 than the day before. There was more light in the morning and less light in the evening.

Also called Fall Back and Winter Time.

Other years: 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934

Daylight Saving Time in Other Years

DST changes do not necessarily occur on the same date every year.

YearDST Start (Clock Forward)DST End (Clock Backward)
1925DST not observed
1926Saturday, April 17, 11:00 pmSunday, October 3, 12:00 midnight
1927Saturday, April 9, 11:00 pmSunday, October 2, 12:00 midnight
1928Saturday, April 14, 11:00 pmSunday, October 7, 12:00 midnight
1929Saturday, April 20, 11:00 pmSunday, October 6, 12:00 midnight
1930DST not observed
1931Saturday, April 18, 11:00 pmSunday, October 4, 12:00 midnight
1932Saturday, April 2, 11:00 pmSunday, October 2, 12:00 midnight
1933DST not observed
1934Saturday, April 7, 11:00 pmSunday, October 7, 12:00 midnight
1935Saturday, March 30, 11:00 pmSunday, October 6, 12:00 midnight
1936Saturday, April 18, 11:00 pmSunday, October 4, 12:00 midnight
1937Saturday, April 3, 11:00 pmSunday, October 3, 12:00 midnight
1938Saturday, March 26, 11:00 pmSunday, October 2, 12:00 midnight
1939Saturday, April 15, 11:00 pmSunday, November 19, 12:00 midnight
1940Saturday, February 24, 11:00 pmSunday, October 6, 12:00 midnight
1941Saturday, April 5, 11:00 pmMonday, October 6, 12:00 midnight
* 1942Saturday, March 14, 11:00 pmSunday, October 25, 12:00 midnight
* 1943Saturday, March 13, 11:00 pmSunday, October 31, 12:00 midnight
* 1944Saturday, March 11, 11:00 pmSunday, October 29, 12:00 midnight
* 1945Saturday, March 10, 11:00 pmSunday, October 28, 12:00 midnight
1946Saturday, April 6, 11:00 pmSunday, October 6, 12:00 midnight
1947Sunday, April 6, 2:00 amSunday, October 5, 3:00 am
1948Sunday, April 4, 2:00 amSunday, October 3, 3:00 am
1949Sunday, April 3, 2:00 amSunday, October 2, 3:00 am
All times are local for Lisbon.
* All or part of this period was on double DST.

Detailed time zone and clock changes in Lisbon

Daylight Saving Time Info

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