Omsk Time (OMST) is a

time zone A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because i ...

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...

that is six hours ahead of UTC ( UTC+06:00), and 3 hours ahead of

Moscow Time Moscow Time (MSK, russian: моско́вское вре́мя) is the time zone for the city of Moscow, Russia, and most of western Russia, including Saint Petersburg. It is the second-westernmost of the eleven time zones of Russia. It has b ...

(MSK). It is used in

Omsk Oblast Omsk Oblast (russian: О́мская о́бласть, ''Omskaya oblast'') is a federal subject of Russia (an oblast), located in southwestern Siberia. The oblast has an area of . Its population is 1,977,665 ( 2010 Census) with the majority, 1.1 ...

History

Until 1991, Omsk Time was one of the two time zones used in Soviet Central Asia. In addition to

in the

Russian SFSR The Russian Soviet Federative Socialist Republic, Russian SFSR or RSFSR ( rus, Российская Советская Федеративная Социалистическая Республика, Rossíyskaya Sovétskaya Federatívnaya Soci ...

, it covered the eastern two thirds of

Kazakh SSR ; kk, Қазақ Советтік Социалистік Республикасы) *1991: Republic of Kazakhstan (russian: Республика Казахстан; kk, Қазақстан Республикасы) , linking_name = the ...

, all of Kyrgyz and

Tajik Tajik, Tadjik, Tadzhik or Tajikistani may refer to: * Someone or something related to Tajikistan * Tajiks, an ethnic group in Tajikistan, Afghanistan and Uzbekistan * Tajik language, the official language of Tajikistan * Tajik (surname) * Tajik cu ...

SSRs, and eastern

Uzbek SSR Uzbekistan (, ) is the common English language, English name for the Uzbek Soviet Socialist Republic (Uzbek SSR; uz, Ўзбекистон Совет Социалистик Республикаси, Oʻzbekiston Sovet Sotsialistik Respublikasi, ...

. This included the city of

Omsk Omsk (; rus, Омск, p=omsk) is the administrative center and largest city of Omsk Oblast, Russia. It is situated in southwestern Siberia, and has a population of over 1.1 million. Omsk is the third largest city in Siberia after Novosibirsk ...

and the capitals Alma-Ata (Almaty), Frunze (Bishkek),

Dushanbe Dushanbe ( tg, Душанбе, ; ; russian: Душанбе) is the capital and largest city of Tajikistan. , Dushanbe had a population of 863,400 and that population was largely Tajik. Until 1929, the city was known in Russian as Dyushambe (ru ...

and

Tashkent Tashkent (, uz, Toshkent, Тошкент/, ) (from russian: Ташкент), or Toshkent (; ), also historically known as Chach is the capital and largest city of Uzbekistan. It is the most populous city in Central Asia, with a population of ...

. 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 Daylight saving time (DST), also referred to as daylight savings time or simply daylight time (United States, Canada, and Australia), and summer time (United Kingdom, European Union, and others), is the practice of advancing clocks (typical ...

, while

Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked co ...

and

Tajikistan Tajikistan (, ; tg, Тоҷикистон, Tojikiston; russian: Таджикистан, Tadzhikistan), officially the Republic of Tajikistan ( tg, Ҷумҳурии Тоҷикистон, Jumhurii Tojikiston), is a landlocked country in Centr ...

in addition "moved west" by adjusting the clocks one hour back. From the 1990s to the 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+06:00 in winter and UTC+07:00 in summer, Omsk time was set to UTC+07:00 until 2014, when it was reset back to UTC+06:00 year-round, but Kemerovo Oblast decided to stay in UTC+07:00 -

Krasnoyarsk Time Krasnoyarsk Time (KRAT) is the time zone seven hours ahead of UTC ( UTC+07:00) and 4 hours ahead of Moscow Time (MSK+4). KRAT is the official time zone for central and east Siberian regions of Krasnoyarsk Krai, Kemerovo Oblast, Khakassia and Tu ...

. In 2016, Altai Krai, Altai Republic, Tomsk Oblast and Novosibirsk oblast switched to Krasnoyarsk Time ( UTC+07:00). Omsk Oblast is now the only part of Russia which uses this time zone.

References

{{reflist Time zones Time in Russia