February 9 is the 40th day of the year in the Gregorian calendar. There are 325 days remaining until the end of the year (326 in leap years). This date is slightly more likely to fall on a Tuesday, Thursday or Saturday (58 in 400 years each) than on Sunday or Monday (57), and slightly less likely to occur on a Wednesday or Friday (56).
474 – Zeno is crowned as co-emperor of the Byzantine Empire.
951 – The Northern Han Kingdom is founded by Liu Chong in modern-day Shanxi.
1555 – Bishop of Gloucester John Hooper is burned at the stake.
1621 – Gregory XV becomes Pope, the last Pope elected by acclamation.
1654 – The Capture of Fort Rocher takes place during the Anglo-Spanish War.
1775 – American Revolutionary War: The British Parliament declares Massachusetts in rebellion.
1788 – The Habsburg Empire joins the Russo-Turkish War in the Russian camp.
1825 – After no candidate receives a majority of electoral votes in the US presidential election of 1824, theUnited States House of Representatives elects John Quincy Adams as President of the United States.
1849 – The new Roman Republic is declared.
1861 – American Civil War: Jefferson Davis is elected the Provisional President of the Confederate States of America by the Confederate convention at Montgomery, Alabama.