December 21 national days 2026
On December 21st, 2 national days fall on this date.
December 21 is a date on the 2026 national-day calendar. TheDayOf currently lists 2 observances for this date: National Cookie Exchange Day and National Look on the Bright Side Day. Open any day page for the date, history, and how to celebrate, or browse the rest of December from the month hub.
Food
Monday, December 21, 2026
National Cookie Exchange Day
Share the sweetness and spread holiday cheer on National Cookie Exchange Day! This festive tradition brings friends, family, and neighbors…
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Fun & Weird
Monday, December 21, 2026
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…
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