National Christmas Lights Day on December 1 marks the start of the holiday lighting season and encourages everyone to turn on their festive displays.
World Basketball Day on December 21 marks the first game in 1891 and teaches how basketball grew into a global sport.
National Mutt Day (July 31 & December 2) promotes adopting mixed-breed dogs and supports shelters where mutts make up most of the population.
National Women Support Women Day, created in 2018 by Amy O’Donnell, centers on women encouraging one another…
Explore over 300 national and international observances in December, highlighting seasonal traditions, awareness, and fun celebrations.