What Day Of The Week Is December 21?

December 21: Day of the Week

December 21, 2026 is the 355th day of the year 2026 in the Gregorian calendar. There are 10 days remaining until the end of the year. The day of the week is Monday.

If you are trying to learn French then this day of the week in French is lundi.

Here’s the December calendar. You can also browse the full year monthly calendar.

December					2026
Sun	Mon	Tue	Wed	Thu	Fri	Sat
1	2	3	4	5
6	7	8	9	10	11	12
13	14	15	16	17	18	19
20	21	22	23	24	25	26
27	28	29	30	31

🧠 Are you the memory master in your friend group? Prove it! Solve complex patterns on a vibrant 4x4 grid. Track your progress and aim for the high score. 🏆 Play Offline anytime! (Sponsored * Android Only)

Zodiac & Birthstone

Sagittarius is the zodiac sign of a person born on this day. Turquoise is the modern birthstone for this month. Onyx is the mystical birthstone from Tibetan origin that dates back over a thousand years.

December 21: This Day in History

This is a frequent day for the winter solstice to occur in the northern hemisphere and summer solstice to occur in the southern hemisphere.

Holy Toledo! Did you know that coffee and word games are an excellent combination to sharpen your vocabulary? Let’s give it a quick spin. Within 30 seconds, how many words can you think of from these letters ZEAFUIQACQW? Check your answers here: Word solver ZEAFUIQACQW. (Sponsored by WordFinder.Cafe)

December 21 by the Numbers

• 308 days since December 21
• 0 year, 10 months, and 5 days ago
• 10 months since then
• December 21 is in the 52nd week of the year 2026 (ISO 8601)
• 44 weeks ago
• The year 2026 is not a leap year

December 21 Historical Event(s)

1826American settlers in Nacogdoches, Mexican Texas, declare their independence, starting the Fredonian Rebellion. 1832Egyptian–Ottoman War: Egyptian forces decisively defeat Ottoman troops at the Battle of Konya. 1883The first Permanent Force cavalry and infantry regiments of the Canadian Army are formed: The Royal Canadian Dragoons and The Royal Canadian Regiment. 1907The Chilean Army commits a massacre of at least 2,000 striking saltpeter miners in in Iquique, Chile. 1937Snow White and the Seven Dwarfs, the world’s first full-length animated feature, premieres at the Carthay Circle Theater. 1946An 8.1 Mw earthquake and subsequent tsunami in Nankaidō, Japan, kill over 1,300 people and destroy over 38,000 homes. 1962Rondane National Park is established as Norway’s first national park. 1967Louis Washkansky, the first man to undergo a heart transplant, dies in Cape Town, South Africa, after living for 18 days after the transplant. 1992A Dutch DC-10, flight Martinair MP 495, crashes at Faro Airport, killing 56 people. 1999The Spanish Civil Guard intercepts a van loaded with 950 kg of explosives that ETA intended to use to blow up Torre Picasso in Madrid.

Who were born on December 21?

1795Leopold von Ranke, German historian (d. 1886) 1850William Wallace Lincoln, son of Abraham Lincoln (d. 1862) 1909Seicho Matsumoto, Japanese mystery writer and journalist (d. 1992) 1935Lorenzo Bandini, Italian racecar driver (d. 1967) 1952Joaquín Andújar, Dominican baseball player 1957Tom Henke, American baseball player 1969Julie Delpy, French actress 1972Claudia Poll, Costa Rican swimmer 1978Mike Vitar, American actor 1981Frankie Abernathy, American actress (d. 2007)

🎂 Ready for a little birthday guessing fun? 🎉 Let’s play a game and see if I can figure out your special day in less than 20 tries. 🎮 Accept challenge? (Sponsored by MyBirthday.Ninja)

Now try another date like anniversaries, birthdays of someone you know or any other date that is special to you. Don’t forget to share the info to your friends, loved ones or social media followers. Who knows, they might appreciate and thank you for it.

Share this page: