• October 1: International Day of Older Persons #UNDOP
• October 1: International Coffee Day #InternationalCoffeeDay
• October 1: World Vegetarian Day #WorldVegetarianDay
• October 2: International Day of Nonviolence #InternationalDayOfNonviolence
• October 3: National Techies Day #TechiesDay
• October 3: World Habitat Day (First Monday of October) #WorldHabitatDay
• October 4: World Animal Day #WorldAnimalDay
• October 4: National Taco Day #NationalTacoDay
• October 5: World Teachers Day #WorldTeachersDay
• October 7: World Smile Day (First Friday of October) #WorldSmileDay
• October 10: World Mental Health Day #WorldMentalHeathDay
• October 11: International Day of the Girl #DayOfTheGirl
• October 13: World Sight Day (Second Thursday of October) #WorldSightDay
• October 14: National Dessert Day #DessertDay
• October 15: Global Handwashing Day #GlobalHandwashingDay
• October 16: World Food Day #FoodDay
• October 16: Bosses Day #BossesDay
• October 17: International Day for the Eradication of Poverty #EndPoverty
• October 20: World Statistics Day (Held every 5 years; it will next be celebrated in 2025) #StatisticsDay
• October 21: Reptile Awareness Day #ReptileAwarenessDay
• October 20: Get to Know Your Customers Day (Third Thursday of October) #GetToKnowYourCustomersDay
• October 24: United Nations Day #UNDay
• October 25: Greasy Foods Day #GreasyFoodsDay
• October 30: National Publicist Day #NationalPublicistDay
• October 30: Checklist Day #ChecklistDay
• October 31: Halloween #Halloween

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