Since what date has Moscow Time been UTC+03:00 without daylight saving time?

Moscow Time has been UTC+03:00 without daylight saving time since 26 October 2014.

That date marked Russia’s reversal of its experiment with permanent summer time. In March 2011, clocks were moved forward and Moscow remained at UTC+04:00 year-round instead of returning to standard time in winter. The 2014 law ended that arrangement and moved Moscow back one hour to UTC+03:00.

Moscow Time now applies across most of western Russia, including Moscow and Saint Petersburg. Russia has multiple time zones, so the country’s eastern regions use later offsets, while Kaliningrad uses UTC+02:00. Russia has not restored the annual daylight-saving clock change since October 2014.

The date is sometimes confused with 27 March 2011, which began the permanent-DST period, or with 1 August 2018, when Russian railway timetables switched from Moscow Time to local time. The question concerns Moscow’s civil-clock offset, not railway scheduling.