Time Zone History

Czech Republic time zone history

Prague left local mean time (UTC+0:57:44) in 1850, the second-earliest switch of the 298 zones with local mean time in the record. Standard time has stayed at UTC+1 since 1891, the tenth-longest run of the 148 zones with no change of standard time since 1970.

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/Prague

Convert a time from Czech Republic

Summer time in 48 of 57 years since 1970

UTC+0: 1 hour behind today’s standard timeUTC+0:57:44: 2 minutes behind today’s standard timeUTC+1: today’s standard timeUTC+2: 1 hour ahead of today’s standard timeUTC+0: 1 hour behind today’sstandard timeUTC+0:57:44: 2 minutes behindtoday’s standard timeUTC+1: today’s standard timeUTC+2: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

18401860188019001920194019601840188019201960
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
January 1, 1850Local mean time (UTC+0:57:44) replacedUTC+0:57:44PMT
October 1, 1891Standard time forward 2 minutesUTC+1CET

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1916April 30October 11 hour, CET to CEST
1917–1918third Monday in April, 02:00third Monday in September, 03:001 hour, CET to CEST
1940April 1not that year1 hour, CET to CEST
1942not that yearNovember 21 hour
1943March 29October 41 hour, CET to CEST
1944–1945first Monday in April, 02:00first Monday in October, 03:001 hour, CET to CEST
1946May 6October 6, December 11 hour, CET to CEST
1947February 23, April 20October 51 hour, CET to CEST
1948April 18October 31 hour, CET to CEST
1949April 9October 21 hour, CET to CEST
Since 1970
1979–1980first Sunday in April, 02:00last Sunday in September, 03:001 hour, CET to CEST
1981–1995last Sunday in March, 02:00last Sunday in September, 03:001 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

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

Clocks next door since 1970

  • Austria (249 km): same time except 182 days in 1979 and 1980.
  • Germany (279 km): same time except 182 days in 1979.
  • Hungary (445 km): same time except 183 days in 1979–1983.
  • Poland (517 km): same time except 358 days in 1977–1987.
  • Switzerland (526 km): same time except 357 days in 1979 and 1980.
  • Kaliningrad (Russia) (659 km): usually 1 hour ahead; different on 9,667 days in 1970–2026.

How it compares

On standard time, clocks in Prague run 2 minutes ahead of local mean solar time.