About December 21
December 21, 2025 is the 355th day of the year 2025 in the Gregorian calendar. There are 10 days remaining until the end of this year. The day of the week is Sunday.
You can browse the full year calendar in case you need it.
Do you drink coffee? Did you know that coffee and word games are an excellent combination to sharpen your vocabulary? Try this! Within 30 seconds, how many words can you think of from these letters VUWAXER? Check your answers here: Word search VUWAXER. (Sponsored by WordFinder.Cafe)
Sagittarius is the sun 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.
According to the lunisolar Chinese calendar, there are 58 days remaining before the start of the next Chinese New Year.
December 21: More About This Day
This is a frequent day for the winter solstice to occur in the northern hemisphere and summer solstice to occur in the southern hemisphere.
What Happened On December 21
- 69 –The Roman Senate declares Vespasian as Roman emperor, the last in the Year of Four Emperors.
- 1140 –Conrad III of Germany besieged Weinsberg.
- 1620 –Plymouth Colony: William Bradford and the Mayflower Pilgrims land on what is now known as Plymouth Rock in Plymouth, Massachusetts.
- 1826 –American settlers in Nacogdoches, Mexican Texas, declare their independence, starting the Fredonian Rebellion.
- 1832 –Egyptian–Ottoman War: Egyptian forces decisively defeat Ottoman troops at the Battle of Konya.
- 1844 –The Rochdale Pioneers commence business at their cooperative in Rochdale, England, starting the Cooperative movement.
- 1861 –Medal of Honor: Public Resolution 82, containing a provision for a Navy Medal of Valor, is signed into law by President Abraham Lincoln.
- 1872 –Challenger expedition: HMS Challenger, commanded by Captain George Nares, sails from Portsmouth.
- 1879 –World première of Henrik Ibsen’s A Doll’s House at the Royal Theatre in Copenhagen.
- 1910 –An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
- 1919 –American anarchist Emma Goldman is deported to Russia.
- 1937 –Snow White and the Seven Dwarfs, the world’s first full-length animated feature, premieres at the Carthay Circle Theater.
- 1941 –World War II: A formal treaty of alliance between Thailand and Japan is signed in the presence of the Emerald Buddha in Wat Phra Kaew.
- 1946 –An 8.1 Mw earthquake and subsequent tsunami in Nankaidō, Japan, kill over 1,300 people and destroy over 38,000 homes.
- 1962 –Rondane National Park is established as Norway’s first national park.
- 1967 –Louis Washkansky, the first man to undergo a heart transplant, dies in Cape Town, South Africa, after living for 18 days after the transplant.
- 1973 –The Geneva Conference on the Arab-Israeli conflict opens.
- 1988 –A bomb explodes on board Pan Am flight 103 over Lockerbie, Dumfries and Galloway, Scotland, killing 270.
- 1992 –A Dutch DC-10, flight Martinair MP 495, crashes at Faro Airport, killing 56 people.
- 2004 –Iraq 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.
Are you looking for a day of the week calculator? Try it on any date like anniversaries, birthday of someone you know, or any other date that is special to you. You can even try it on historical dates. For example: December 21
(Sponsored by DayOfTheWeek.org)
Share or Link to This Page: