National days, ongoing national weeks and months, and global observances for December 21, 2026. Plus historical events and birthdays.
December 21, 2026 celebrates Humbug Day, plus 8 more.
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National Flashlight Day, on the same day as Winter Solstice, reminds us to turn on some lights during the shortest day of the year.
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On December 21st, National Maine Day recognizes the 23rd state to join the union and the most eastern one, too!
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The winter solstice occurs the same day that winter begins. Both are the shortest day and longest night of the year in the Northern Hemisphere. It occurs annually between December 20th and December 23rd.
Read the full story →Longer-running observances that include this date.
Universal Human Rights Month
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Bingo's Birthday Month
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Operation Santa Paws | December 1-24th
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Learn A Foreign Language Month
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National Drunk & Drugged Driving Prevention Month
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International Sharps Injury Prevention Awareness Month
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Spiritual Literacy Month
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Safe Toys And Gifts Month
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National Tie Month
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National Write A Business Plan Month
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Root Vegetables And Exotic Fruit Month
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Worldwide Food Service Safety Month
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Showing the first 12 — See all months for December.
