December 23rd, 1147

Born on December 23rd, 1147

Age in days, weeks and months
Wow, over 320,000 days old!

Why not celebrate an alternative birthday? In 101 days, exactly on November 4th, 2026, people who were born on December 23rd, 1147 will be 321,000 days old!

... in seconds, minutes and hours

What happened on December 23rd?

December 23rd, 1776

American Revolutionary War: American troops, overwhelmed by British reinforcements, retreated from the Battle of Iron Works Hill.

December 23rd, 1997

The Pioneer Helmet, one of only six Anglo-Saxon helmets to be discovered, was first placed on public display.

December 23rd, 2008

The Guinean military engineered a coup d'état, announcing that it planned to rule the country for two years prior to a new presidential election.

December 23rd, 1984

An engine fire caused Aeroflot Flight 3519 to crash shortly after takeoff from Krasnoyarsk, USSR, killing all but one of the 111 people on board.

December 23rd, 1958

Tokyo Tower, then the world's tallest freestanding tower, opened.

December 23rd, 1957

Leading the Australia national cricket team, Ian Craig became the youngest-ever Test cricket captain at the time.

December 23rd, 1938

The first living specimen of a coelacanth, long believed to be extinct, was discovered in a South African fisherman's catch.

December 23rd, 1919

The Sex Disqualification (Removal) Act was enacted, lifting most of the existing common-law restrictions on women in the United Kingdom.

December 23rd, 1916

First World War: Allied forces gained a strategic victory at the Battle of Magdhaba on the Sinai Peninsula.

December 23rd, 1815

Jane Austen's novel Emma was first published, the last novel released during her lifetime.

December 23rd, 1793

French Revolution: A Royalist counter-revolutionary army was decisively defeated at the Battle of Savenay, although fighting continued in the War in the Vendée for years afterward.

December 23rd, 1783

George Washington resigned as commander-in-chief of the Continental Army at the Maryland State House in Annapolis (painting shown).

December 23rd, 1823

The poem "Account of a Visit from St. Nicholas," also known as "'Twas the Night Before Christmas," is published anonymously in the Troy Sentinel.

December 23rd, 2023

A series of massacres targeting Berom civilians unfold in the Plateau State in Nigeria, killing over 200 people and further injuring over 500. No group claims responsibility.

December 23rd, 1299

The Ilkhanate ruler Ghazan defeats a Mamluk army that opposes his invasion into Syria in the Battle of Wadi al-Khaznadar near Homs.

Public holidays on December 23rd

Fixed holidays (Christian Feast Day) which are celebrated on December 23rd.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1147 is a normal year and no leap year.

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December 1147