Holidays in October:

1. International Day of Older Persons, Feast of St. Thérèse de Lisieux, Feast of Protection/Patronage of the Theotokos
2. International Day of Non-Violence, Gandhi’s Birthday
4. World Animal Day, Feast of St. Francis of Assisi
5. World Teachers' Day
6. German-American Day
7. Start of Yom Kippur (Sunset)
9. Leif Erikson Day
10. World Mental Health Day, World Day Against Death Penalty, Columbus Day
12. Freethought Day
13. Feast of Our Lady of Fatima
14. World Standards Day
15. Pregnancy and Infant Loss Remembrance Day, White Cane Safety Day, Global Handwashing Day, Sweetest Day, Feast of St. Teresa of Avila
16. World Food Day
17. International Day for the Eradication of Poverty
19. Mother Teresa Day
20. Birth of the Báb
21. International Day of the Nacho
22. International Stuttering Awareness Day
23. Mole Day
24. United Nations Day
27. Navy Day
30. Devil's Night/Mischief Night
31. Halloween, Samhain (northern hemisphere), Beltane (southern hemisphere)