Memorial Day of St. Anthony of Siysk
Celebrated on 20 DecemberMemorial Day of St.
Anthony of Siysk
Other holidays on 20 December
- International Human Solidarity Day
- Day of the Security Authorities of the Russian Federation
- Pocket Universe Day
- Joyful Song Festival
- Games Day
- Festival of Mithra in Zoroastrianism
- Day of Mourning in Panama (Mourning Day)
- According to the folk calendar - Abrosimov Day
- Day of the Venerable Neil Stolobensky
- Feast of the Icon of the Mother of God of Vladimir (Seliger)
- Memorial Day of St. Ambrose of Milan
- Memorial Day of St. Paul the Obedient