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 Spanish then this day of the week in Spanish is lunes.

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

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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.

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December 21 by the Numbers

• 307 days since December 21
• 0 year, 10 months, and 4 days ago
• 10 months since then
• December 21 is in the 52nd week of the year 2026 (ISO 8601)
• 43 weeks ago
• The year 2026 is not a leap year

December 21 Historical Event(s)

1620Plymouth Colony: William Bradford and the Mayflower Pilgrims land on what is now known as Plymouth Rock in Plymouth, Massachusetts. 1844The Rochdale Pioneers commence business at their cooperative in Rochdale, England, starting the Cooperative movement. 1937Snow White and the Seven Dwarfs, the world’s first full-length animated feature, premieres at the Carthay Circle Theater. 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. 1968Apollo program: Apollo 8 launched from the Kennedy Space Center, placing its crew on a lunar trajectory for the first visit to another celestial body by humans. 1979Lancaster House Agreement: An independence agreement for Rhodesia is signed in London by Lord Carrington, Sir Ian Gilmour, Robert Mugabe, Joshua Nkomo, Bishop Abel Muzorewa and S.C. Mundawarara. 1994Mexican volcano Popocatepetl, dormant for 47 years, erupts gases and ash. 1995The city of Bethlehem passes from Israeli to Palestinian control. 2004Iraq War: A suicide bomber killed 22 at the forward operating base next to the main U.S. military airfield at Mosul, the single deadliest suicide attack on American soldiers.

Who were born on December 21?

1832John H. Ketcham, American politician (d. 1906) 1851Thomas Chipman McRae, American politician (d. 1929) 1908Herbert Hutner, American banker and attorney (d. 2008) 1921John Severin, American comics artist 1948Samuel L. Jackson, American actor 1948Willi Resetarits, Austrian musician 1960Louis Demetrius Alvanis, British pianist 1963Govinda Ahuja, Indian actor and politician 1972Claudia Poll, Costa Rican swimmer 1987Brad Howard, Australian footballer

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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.

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