February 23rd is the 54th day of the year in the Gregorian calendar. There are 311 days remaining until the end of the year (312 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).
1455 – Traditional date for the publication of the Gutenberg Bible, the first Western book printed with movable type.
1836 – Texas Revolution: The Siege of the Alamo (prelude to the Battle of the Alamo) begins in San Antonio, Texas.
1941 – Plutonium is first produced and isolated by Dr. Glenn T. Seaborg.
1945 – World War II: During the Battle of Iwo Jima, a group of United States Marines and a U.S. Navy hospital corpsman reach the top of Mount Suribachi on the island and are photographed raising the American flag.
1954 – The first mass inoculation of children against polio with the Salk vaccine begins in Pittsburgh.
The Young Victoria Actress Emily Blunt turns 35
Actor Aziz Ansari turns 35
Actress Dakota Fanning turns 24
Beauty and the Beast Actor Josh Gad turns 37
Singer-Songwriter Skylar Grey turns 32