Every yearDecember 21

Everything December 21 celebrates

5 national, international and world observances, plus 4 that moveFoodTechBooksCommunity

5 national, international, and world observances are on the calendar for December 21 every year, and 4 more land on it in some years.

#ObservanceCategoryActions
01National Hamburger DayLeadFood
02National Flashlight DayTech
03Crossword Puzzle DayBooks
04National Homeless Persons' Memorial DayCommunity
05Humbug DayCelebration

These are set by a rule rather than a fixed date, so they only land on December 21 in some years.

First Day of Winter — 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034 and 2035

Yule — 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034 and 2035

National Wreaths Across America Day — 2030

Super Saturday — 2030

Born on December 21

Historic figures

Celebrities & public figures

Birth dates from Wikidata; names link to Wikipedia.

This page covers December 21 in any year. For one year in particular — the weekday, and which moveable observances landed on it — see December 21, 2026.

Today Celebrates tracks daily national, international and world observances all year.

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