December 21 Holidays

Number of holidays
21
Day of the year
355
Days left in the year
10

National Crossword Puzzle Day marks December 21, 1913, when Arthur Wynne published the first crossword puzzle in the New York World’s “Fun” supplement — a diamond-shaped grid he called “word-cross” whose format was standardized by the New York Times in 1942 and now generates an estimated $650 million in book sales annually. December Solstice is the astronomical event at which the Northern Hemisphere reaches its maximum tilt away from the sun — the shortest day and longest night of the year in the Northern Hemisphere, and the first official day of winter. Dongzhi — the Winter Solstice Festival — is a traditional Chinese holiday observed on or around the winter solstice, when families gather to eat tang yuan (glutinous rice balls in sweet broth) or dumplings, sharing a meal that celebrates family reunion and the return of longer days. National Coquito Day celebrates the Puerto Rican coconut rum punch — a holiday beverage made from coconut milk, sweetened condensed milk, rum, vanilla, and spices — considered an essential part of Puerto Rican Christmas tradition.

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All Holidays On December 21

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Food & Beverage

National Coquito Day

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Special Interest

Winter Solstice

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Special Interest

December Solstice

Don’t Make Your Bed Day
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Special Interest

Dongzhi

Humbug Day
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International Dalek Remembrance Day
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Food & Beverage

National Armagnac Day

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Special Interest

National Flashlight Day

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National Maine Day
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Special Interest

World Snowboard Day

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Cultural

Yule

What is the most popular holiday on December 21?

On December 21, December Solstice is the most universally recognized astronomical event. National Crossword Puzzle Day is the most widely recognized pop culture observance, marking the December 21, 1913 first puzzle, and Dongzhi is the most globally observed cultural holiday.

What countries celebrate holidays on December 21?

December 21 observances span China and Chinese diaspora communities worldwide (Dongzhi), Puerto Rico and U.S. communities (National Coquito Day), and the U.S., which hosts National Crossword Puzzle Day, Blue Christmas Service, and Look On The Bright Side Day. December Solstice is observed globally.

What are some fun or unusual holidays on December 21?

December 21 includes National Crossword Puzzle Day, National Coquito Day, Dongzhi, Don’t Make Your Bed Day, and Blue Christmas Service — a date pairing the 1913 word grid, Puerto Rican rum coconut, Chinese dumplings, unmade bed vindication, and solstice grief space.