New Year according to Julian Calendar on January 14 Tatiana Day (Students Day) on January 25 Valentine's Day on February 14 Maslenitsa (a week before the Great Lent) Start date changes every year, depending on the beginning of the Great Lent (in 2022: 27 February to 6 March) Internal Troops and National Guard Servicemen's Day on March 27 Annunciation on April 7 Pascha (floating Sunday between April 4 and May 8) Cosmonautics Day on April 12 Soviet Air Defense Forces Day on the Second Sunday of April Russian State Fire Service Day on April 30 Radio Day on May 7 Saints Cyril and Methodius' Day on May 24 (also Slavonic Literature and Culture Day) Border Guards Day on May 28, celebrating the anniversary of the Border Service of the Federal Security Service of the Russian Federation Ivan Kupala Day on July 7 (should be 24 June, St. John's Day and Summer Solistice, but shifted due to Julian calendar usage) Day of Remembrance and Sorrow on 22 June, marking the start of Operation Barbarossa — the Nazi invasion of the USSR Paratroopers' Day on August 2 Apple Feast of the Saviour on August 19 (also the Great Feast of the Transfiguration of Jesus) Great Feast of the Dormition of the Mother of God on August 28 Knowledge Day on September 1 (traditionally, the first day of school) Day of Tankmen on the Second Sunday of September Father's Day on the third Sunday of October October Revolution Day on November 7 Mother's Day on the last Sunday of November Naval Infantry Day on November 27 (Western) Christmas Day on December 25 See also Public holidays in the Soviet Union Days of Military Honour References Russia Observances in Russia Holidays