December 21 national days 2026
On December 21st, 4 national days fall on this date.
December 21 is a date on the 2026 national-day calendar. TheDayOf currently lists 4 observances for this date: National Cookie Exchange Day, World Meditation Day, National Look on the Bright Side Day, and World Basketball Day. Open any day page for the date, history, and how to celebrate, or browse the rest of December from the month hub.

National Cookie Exchange Day
Share the sweetness and spread holiday cheer on National Cookie Exchange Day! This festive tradition brings friends, family, and neighbors…
World Meditation Day
World Meditation Day on December 21 is the United Nations date for a simple, secular pause: sit, breathe, and notice what is here. You do…
National Look on the Bright Side Day
Stay positive! Look on the Bright Side Day encourages optimism and positive thinking. Even on the shortest day of the year, find reasons to…
World Basketball Day
World Basketball Day on December 21 is the United Nations date for the round-ball game James Naismith invented for a winter gym class. Lace…