Time Zone History

Poland time zone history

On standard time, clocks at Warsaw run 24 minutes behind local mean solar time, the largest gap of the 7 zones in Europe whose clocks run behind the sun. Local mean time, UTC+1:24, ended in 1880.

UTC+1

Standard time is UTC+1 (CEST/CET); clocks go forward to UTC+2 on the last Sunday in March and back on the last Sunday in October.

tz database name Europe/Warsaw

Convert a time from Poland

Summer time in 50 of 57 years since 1970

UTC+1: today’s standard timeUTC+1:24: 24 minutes ahead of today’s standard timeUTC+2: 1 hour ahead of today’s standard timeUTC+3: 2 hours ahead of today’s standard timeUTC+1: today’s standard timeUTC+1:24: 24 minutes ahead oftoday’s standard timeUTC+2: 1 hour ahead of today’sstandard timeUTC+3: 2 hours ahead of today’sstandard time

How to read this chart

Before 1970

187018901910193019501970187019101950
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
January 1, 1880Local mean time (UTC+1:24) replacedUTC+1:24WMT
August 5, 1915Standard time back 24 minutesUTC+1CET
September 16, 1918Summer offset kept as standard time; clocks did not moveUTC+2EET
June 1, 1922Standard time back 1 hourUTC+1CET

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1916April 30October 11 hour, CET to CEST
1917April 16September 171 hour, CET to CEST
1918April 15not that year1 hour, CET to CEST
1919April 15September 161 hour, EET to EEST
1940June 23not that year1 hour, CET to CEST
1942not that yearNovember 21 hour
1943March 29October 41 hour, CET to CEST
1944April 3October 41 hour, CET to CEST
1945April 29November 11 hour, CET to CEST
1946April 14October 71 hour, CET to CEST
1947May 4October 51 hour, CET to CEST
1948April 18October 31 hour, CET to CEST
1949April 10October 21 hour, CET to CEST
1957June 2September 291 hour, CET to CEST
1958March 30September 281 hour, CET to CEST
1959May 31October 41 hour, CET to CEST
1960April 3October 21 hour, CET to CEST
1961May 28October 11 hour, CET to CEST
1962–1964last Sunday in May, 01:00last Sunday in September, 02:001 hour, CET to CEST
Since 1970
1977April 3September 251 hour, CET to CEST
1978April 2October 11 hour, CET to CEST
1979–1980first Sunday in April, 01:00last Sunday in September, 02:001 hour, CET to CEST
1981–1995last Sunday in March, 01:00last Sunday in September, 02:001 hour, CET to CEST
1996–2037last Sunday in March, 02:00last Sunday in October, 03:001 hour, CET to CEST

Clock changes in 2026, 2027 and 2028

The clocks go forward 1 hour (CET to CEST) on March 29, 2026, March 28, 2027 and March 26, 2028 at 02:00 and back 1 hour (CEST to CET) on October 25, 2026, October 31, 2027 and October 29, 2028 at 03:00, local time.

Also on UTC+1

Czech Republic, Germany, Hungary, Austria, Serbia, Switzerland, Belgium, Albania, Italy and France (nearest first; 10 more on the list of offsets).

Clocks next door since 1970

  • Kaliningrad (Russia) (276 km): usually 1 hour ahead; different on 9,310 days in 1970–2026.
  • Lithuania (393 km): usually 1 hour ahead; different on 7,517 days in 1970–2002.
  • Belarus (475 km): usually 1 hour ahead; different on 9,182 days in 1970–2026; 2 hours ahead today.
  • Czech Republic (517 km): same time except 358 days in 1977–1987.
  • Germany (519 km): same time except 540 days in 1977–1987.

How it compares

Standard time has stayed at UTC+1 since 1922.