| KALT | 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) |
Samara Time (SAMT) is the time zone four hours ahead of UTC (UTC+4) and 1 hour ahead of Moscow Time (MSK+1). Samara Time is used in Astrakhan Oblast, Samara Oblast, Saratov Oblast, Udmurtia, and Ulyanovsk Oblast.
Until a reform on 28 March 2010, Samara Time was UTC+4 in winter and Samara Summer Time (SAMST) was UTC+5 in summer. From that date, Samara Time was abolished with the two regions effectively joining Moscow Summer Time.[1][2] In March 2011, Moscow time was moved forward to UTC+04:00 year-round, and Samara Time was reinstated on 26 October 2014, when Moscow time moved back one hour to UTC+03:00 year-round and Samara Oblast and Udmurtia remained on UTC+04:00. On 27 March 2016, Ulyanovsk Oblast and Astrakhan Oblast switched to Samara Time by moving the clock 1 hour forwards from Moscow time.[3][4] On 4 December 2016, Saratov Oblast also switched to Samara Time by moving forward 1 hour from Moscow time.[5][6] On 28 October 2018, Volgograd Oblast also switched to Samara Time by moving forward 1 hour from Moscow time,[7] but this change was reverted on 27 December 2020.[8][9]
