Time Zone History

Armenia time zone history

On standard time, clocks at Yerevan run 1 hour 2 minutes ahead of local mean solar time, the largest gap of the 9 zones on UTC+4 standard time. Daylight saving time was used in 30 years since 1970, last in 2011; under the current rules the clocks no longer change. Yerevan kept local mean time (UTC+2:58) until 1924, tied for the latest switch 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/Yerevan

Convert a time from Armenia

Summer time in 30 of 57 years since 1970

UTC+2:58, UTC+3: behind today’s standard timeUTC+4: today’s standard timeUTC+5: 1 hour ahead of today’s standard timeUTC+2:58, UTC+3: behind today’sstandard timeUTC+4: today’s standard timeUTC+5: 1 hour ahead of today’sstandard time

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Before 1970

192019301940195019601970192019301940195019601970
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
May 2, 1924Local mean time (UTC+2:58) 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 24, 1995Summer 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
1992–1994last Sunday in March, 02:00fourth Sunday in September, 03:001 hour
1995March 26not that year1 hour
1997–2011last Sunday in March, 02:00last Sunday in October, 03:001 hour

Also on UTC+4

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

Clocks next door since 1970

  • Georgia (173 km): same time except 2,508 days in 1992–2011.
  • Azerbaijan (454 km): same time except 1,606 days in 1992–2015.
  • Aqtau (Kazakhstan) (675 km): usually 1 hour ahead; different on 5,966 days in 1981–2011.
  • Astrakhan (Russia) (743 km): same time except 7,104 days in 1989–1992, 1995–2011 and 2014–2016.
  • Iraq (760 km): usually 1 hour behind; different on 3,225 days in 1981–1985 and 1991–2011.