Fiktivnaya Rossiya - Holidays

Holidays established by law
January 1st New Year's Day
January 2nd - 4th New Year Holiday
January 7th (Julian) Christmas
February 23rd Defender of the Fatherland Day
March 8th International Women's Day
moveable, Easter Sunday (In each year is calculated on a lunisolar calendar)
moveable, Easter Monday (In each year is calculated on a lunisolar calendar)
May 1st International Workers' Day
May 9th Victory Day over Nazism in World War II
June 12th Independence Day
November 4th Unity Day
December 12th Constitution Day

List of other public holidays, commemorative and professional days
January 12th Prosecutor General's Day (Honoring the 1772 foundation of the office of the Prosecutor General of Russia)
January 25th Tatiana Day (Celebrated as (University) Students' Day)
February 15th International Duties Memorial Day (Honoring all those who served in the 1979–1989 Soviet–Afghan War and serving in various other military actions abroad, e.g. Vietnam)
February 27th Day of Special Operations Forces (Honoring the active and reserve personnel, heroes and veterans of the Special Operations Forces)
March 25th Cultural Worker Day (Honoring people involved in the cultural sector)
April 21st Local Self-Government Day
April 26th Memorial Day for hose Lost in Radiation Accidents and Catastrophes (Anniversary of the 1986 Chernobyl disaster)
April 27th Day of Russian Parliamentarism (commemorates the first session of Russia's first-ever State Duma in 1906)
June 6th Day of the Russian Language
June 8th Social Worker Day (Enacted in 2000)
3rd Sunday of June Medical Worker Day (Has been celebrated since 1988 in USSR)
Last Sunday of July Navy Day (Honoring the active and reserve personnel, heroes and veterans of the Russian Navy)
1st Sunday of August Railway Workers' Day (Holiday commemorating the achievements of the railways sector)
August 6th Russian Railway Troops Day (Honoring all the active and reserve personnel, heroes, fallen and veterans of the Russian Railway Troops)
2nd Saturday of August Sports Day (Holiday commemorating the achievements of the nation's sportsmen and women, coaches, judges, sports officials and youth and disabled athletes)
August 12th Russian Air Force Day (Honoring the active and reserve personnel, heroes and veterans of the Russian Air Force)
August 27th Films and Movies Day (Honoring people involved in one of the world's oldest national film industries)
September 13th Programmer Day (professional day)
September 29th Day of Machine-Building industry workers (professional holiday)
October 1st Russian Ground Forces Day (Honors those serving, the heroes, fallen and veterans of the Russian Ground Forces on the day of the raising of the first units of the legendary Streltsy by Ivan the Terrible in 1550)
October 4th Russian Aerospace Defense Forces Day (The anniversary of the 1957 launch of Sputnik that opened the way to the Space Age)
October 23rd Day of Advertisement industry Workers (professional holiday, enacted in 1994)
October 24th Day of Special Forces of the Armed Forces (Memorial, enacted in 2006, honoring the 1950 raising of the first Spetsnaz companies)
October 25th Day of Customs Workers (Enacted in 1995)
October 29th Day of MVD Security services (Enacted in 1952 by government decree)
October 30th Day of Remembrance of the Victims of Political Repressions (Enacted in 1991, honors the victims of the Imperial and Soviet era political repressions)
October 31st Day of the Detention Centers and Prisons Workers (Enacted in 2006)
November 10th Police and Internal Affairs Servicemen's Day (Honoring all those serving in the Police of Russia and all those working in the Ministry of Internal Affairs)
November 19th Day of the Missile Forces and Artillery (Enacted on 21 October 1944, to commemorate the artillery strikes and bombardment at the Battle of Stalingrad of 19 November 1942)
November 27th Naval Infantry Day (Honoring the 1705 date of the raising of the first units of today's Russian Naval Infantry by orders of Peter the Great)
December 9th Fatherland's Heroes Day (Anniversary of the 1769 establishment (OS date: November 26) by Catherine the Great of the Order of St. George)
December 17th Strategic Missile Troops Day (Enacted in 1995 to commemorate the establishment of the strategic missile forces on the 17th of December 1959)

Popular holidays which are not public holidays
New Year according to Julian Calendar on January 14th
Death Anniversary of Vladimir Lenin and Bloody Sunday on January 21–22
Tatiana Day (student's day) on January 25th
Valentine's Day on February 14th
Maslenitsa (a week before the Great Lent) Start date changes every year, depending on the beginning of the Great Lent
Internal Troops and National Guard Servicemen's Day on March 27th
Annunciation on April 7th
Cosmonautics Day on April 12th
Soviet Air Defense Forces Day on the Second Sunday of April
Russian State Fire Service Day on April 30th
Radio Day on May 7th
Saints Cyril and Methodius' Day on May 24th (also Slavonic Literature and Culture Day)
Border Guards Day on May 28th, celebrating the anniversary of the Border Service of the Federal Security Service of the Russian Federation
Ivan Kupala Day on July 7th (should be 24th June, St. John's Day and Summer Solistice, but shifted due to Julian calendar usage)
Day of Remembrance and Sorrow on 22nd June (marking the start of Operation Barbarossa - the Nazi invasion of the USSR)
Paratroopers Day on August 2nd
Savior of the Apple Feast Day on August 19th (also the Great Feast of the Transfiguration of Jesus)
Great Feast of the Dormition of the Mother of God on August 28th
Knowledge Day on September 1st (traditionally, the first day of school)
Tankers Day on the Second Sunday of September
October Revolution Day on November 7th
Naval Infantry Day on November 27th
(Western) Christmas Day on December 25th
Emergency Workers Day on December 27th, celebrating those working in the Ministry of Emergency Situations on the anniversary of its foundation in 1990