Memorial Day of the Holy Martyrs Sergius and Bacchus
Celebrated on 20 OctoberMemorial Day of the Holy Martyrs Sergius and Bacchus
Other holidays on 20 October
- International Chefs Day
- Day of the Military Signal Officer in Russia (Day of the Signal Troops of the RF Armed Forces)
- International Day of Air Traffic Controller
- Winter stocking day
- Primorsky Territory Education Day
- World Osteoporosis Day
- International Sloth Day
- According to the folk calendar - Sergey Zimny
- All-Ukrainian Day against Breast Cancer
- Liberation Day of Belgrade in Serbia
- Baha'i Baba's Birthday
- Memorial Day of St. Jonah of Hankow