Time Zone History

Azerbaijan time zone history

Daylight saving time was used in 32 years since 1970, last in 2015; under the current rules the clocks no longer change. Baku kept local mean time (UTC+3:19:24) until 1924, tied for the latest switch among the 9 zones on UTC+4 standard time. Clocks have been changed 64 times since 1970, tied for the most among the 9 zones on UTC+4 standard time.

UTC+4

Standard time is UTC+4 all year under the current rules.

tz database name Asia/Baku

Convert a time from Azerbaijan

Summer time in 32 of 57 years since 1970

UTC+3: 1 hour behind today’s standard timeUTC+3:19:24: 41 minutes behind today’s standard timeUTC+4: today’s standard timeUTC+5: 1 hour ahead of today’s standard timeUTC+3: 1 hour behind today’sstandard timeUTC+3:19:24: 41 minutes behindtoday’s standard timeUTC+4: today’s standard timeUTC+5: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

192019301940195019601970192019301940195019601970
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
May 2, 1924Local mean time (UTC+3:19:24) replacedUTC+3numeric only
March 1, 1957Standard time forward 1 hourUTC+4numeric only
Since 1970
March 31, 1991Summer offset kept as standard time; clocks did not moveUTC+3numeric only
September 27, 1992Summer offset kept as standard time; clocks did not moveUTC+4numeric only

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
1981–19831 April, 00:001 October, 00:001 hour
1984April 1September 301 hour
1985–1990last Sunday in March, 02:00last Sunday in September, 03:001 hour
1991not that yearSeptember 291 hour
1992March 29not that year1 hour
1996–2015last Sunday in March, 05:00last Sunday in October, 06:001 hour

Also on UTC+4

Georgia, Armenia, Astrakhan (Russia), Saratov (Russia), Samara (Russia), Ulyanovsk (Russia), United Arab Emirates and Mauritius.

Clocks next door since 1970

  • Georgia (447 km): same time except 3,328 days in 1992–2015.
  • Armenia (454 km): same time except 1,606 days in 1992–2015.
  • Aqtau (Kazakhstan) (461 km): usually 1 hour ahead; different on 6,840 days in 1981–2015.
  • Iran (542 km): usually 30 minutes behind; different on 6,281 days in 1977–2022.
  • Astrakhan (Russia) (679 km): same time except 8,497 days in 1989–2016.

How it compares

On standard time, clocks in Baku run 41 minutes ahead of local mean solar time.