Omsk Time

Time in Russia
     USZ1 Kaliningrad Time UTC+2 (MSK–1)
     MSK Moscow Time UTC+3 (MSK±0)
     SAMT Samara Time UTC+4 (MSK+1)
     YEKT Yekaterinburg Time UTC+5 (MSK+2)
     OMST Omsk Time UTC+6 (MSK+3)
     KRAT Krasnoyarsk Time UTC+7 (MSK+4)
     IRKT Irkutsk Time UTC+8 (MSK+5)
     YAKT Yakutsk Time UTC+9 (MSK+6)
     VLAT Vladivostok Time UTC+10 (MSK+7)
     MAGT Magadan Time UTC+11 (MSK+8)
     PETT Kamchatka Time UTC+12 (MSK+9)

Omsk Time (OMST) is a time zone in Russia that is six hours ahead of UTC (UTC+06:00), and 3 hours ahead of Moscow Time (MSK).[1]


Until 1991, Omsk Time was one of the two time zones used in Soviet Central Asia. In addition to Omsk Oblast in the Russian SFSR, it covered the eastern two thirds of Kazakh SSR, all of Kyrgyz and Tajik SSRs, and eastern Uzbek SSR. This included the city of Omsk and the capitals Alma-Ata (Almaty), Frunze (Bishkek), Dushanbe and Tashkent.

For two years after the collapse of the Soviet Union, Omsk Oblast remained the only region in Russia in this time zone. The newly independent Central Asian states ceased to observe daylight saving time, while Uzbekistan and Tajikistan in addition "moved west" by adjusting the clocks one hour back.

In 1990s-2010s, Russia experienced a countrywide wave of clock shifts towards Moscow. By 2010, all Western Siberia's Moscow+4 regions moved to Moscow+3, merging into Omsk Time.

In 2011, Russia moved to year-round daylight saving time. Instead of switching between UTC+6 in winter and UTC+7 in summer, Omsk time was set to UTC+7 until 2014, when it was reset back to UTC+6 year-round.

Changes in area observing Omsk Time
Date region(s) Type of change IANA time zone (tzid)
Eastern 2/3 Kazakhstan leave Asia/Almaty
East Uzbekistan leave Asia/Tashkent
Kyrgyzstan leave Asia/Bishkek
Tajikistan leave Asia/Dushanbe
1993-05-23 Novosibirsk Oblast [2] join Asia/Novosibirsk
1995-05-28 Altai Krai and Altai Republic [3] join Asia/Novosibirsk
2002-05-01 Tomsk Oblast [4][5] join Asia/Novosibirsk
2010-03-28 Kemerovo Oblast [6] [7] join Asia/Novosibirsk


  1. "RUSSIA TIME ZONES - RUSSIA CURRENT TIMES". Retrieved 15 July 2012.
  2. Новосибирская область переводится из шестого часового пояса в пятый 23 мая в 00 часов 00 минут. (№ 21, 22.05.1993)
  3. Государственное Собрание  Эл Курултай Республики Алтай. Постановление №8-11 от 6 апреля 1995 г. «О переводе Республики Алтай в пятый часовой пояс». Опубликован: "Сборник Ведомости Государственного Собрания - Эл Курултай Республики Алтай", №8, 12 декабря 1995 г. (State AssemblyEl Kurultai of the Altai Republic. Resolution #8-11 of 6 April 1995 On Transferring the Altai Republic to the Fifth Time Zone. ).
  5. Правительство Российской Федерации. Постановление №246 от 17 апреля 2002 г. «О применении на территории Томской области времени пятого часового пояса». Опубликован: "Российская газета", 24 апреля 2002 г. (Government of the Russian Federation. Resolution #246 of 17 April 2002 On Using the Time of the Fifth Time Zone on the Territory of Tomsk Oblast. ).
  7. Правительство Российской Федерации. Постановление №740 от 14 сентября 2009 г. «О применении на территории Кемеровской области времени пятого часового пояса». (Government of the Russian Federation. Resolution #740 of September 14, 2009 On Using the Time of the Fifth Time Zone on the Territory of Kemerovo Oblast. ).
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