Wikipedia:Selected anniversaries/July 22
July 22: Pi Approximation Day; Feast day of Mary Magdalene.
- 1099 - First Crusade: Godfrey of Bouillon was elected the first Protector of the Holy Sepulchre in the Kingdom of Jerusalem.
- 1456 - Forces under John Hunyadi (pictured) lifted the Siege of Belgrade and defeated an Ottoman invasion into the Kingdom of Hungary.
- 1933 - Wiley Post became the first pilot to fly a fixed-wing aircraft solo around the world.
- 1946 - An Irgun bomb destroyed the headquarters of the British Mandate of Palestine at the King David Hotel in Jerusalem, killing 90.
- 2003 - Coalition forces attacked a compound in Mosul, Iraq, killing two of Saddam Hussein's sons, Uday and Qusay, the "aces of hearts and clubs" on the U.S. list of most-wanted Iraqis after the invasion of Iraq.