Holidays calendar August 2023‹ July 2023September 2023 ›DatePopular holidaysOther holidays and observances1 TuesdayWorld Wide Web Day,World Lung Cancer Day,Girlfriends Day,World Breastfeeding Week2 WednesdayEarth Overshoot Day,Coloring Book Day,World Breastfeeding Week3 ThursdayWatermelon Day,Clean Your Floors Day,World Breastfeeding Week4 FridayInternational Clouded Leopard Day,International Beer Day,World Breastfeeding Week5 SaturdayInternational Mustard Day,Oyster Day,International Alopecia Day,Underwear Day,Disc Golf Day,World Breastfeeding Week6 SundayInternational Assistance Dog Week,Fresh Breath Day,Sisters' Day,World Breastfeeding Week7 MondaySummer Bank HolidayInternational Assistance Dog Week,Aged Care Employee Day,World Breastfeeding Week8 TuesdayInternational Assistance Dog Week,International Cat Day9 WednesdayInternational Assistance Dog Week,Book Lovers Day,International Day of the World's Indigenous People10 ThursdayInternational Assistance Dog Week,World Lion Day11 FridayInternational Assistance Dog Week12 SaturdayInternational Assistance Dog Week,World Elephant Day,Bowling Day,International Youth Day13 SundayInternational Left Handers Day14 Monday15 Tuesday16 WednesdayWorld Calligraphy Day,World Roller Coaster Day17 ThursdayThrift Shop Day,Day of Positively Twisted People18 FridayIce Cream Pie Day19 SaturdayInternational Orangutan Day,International Homeless Animals’ Day,World Photo Day,Daughter-in-law Day,International Geocaching Day,World Humanitarian Day20 SundayInternational Lighthouse Day,World Mosquito Day21 MondayWorld Optimist Day,International Day of Remembrance and Tribute to the Victims of Terrorism22 TuesdayClairvoyant's Day,World Plant Milk Day,International Day Commemorating the Victims of Acts of Violence Based on Religion and Belief23 WednesdayInternational Day for the Remembrance of the Slave Trade and Its Abolition24 ThursdayPluto Demoted Day25 FridayInstant Soup Day26 SaturdayInternational Bat Night,International Dog Day,Glitter Day27 SundayInternational Gamebook Day28 MondaySummer Bank HolidayBow Tie Day29 TuesdayInternational Day against Nuclear Tests30 WednesdayInternational Day of the Disappeared,International Whale Shark Day,International Day of the Victims of Enforced Disappearances31 ThursdayInternational Day for People of African DescentSuccess!Error!