Wikipedia:Selected anniversaries/July 22
July 22: Pi Approximation Day, feast day of Mary Magdalene
- 1864 - Confederate forces unsuccessfully attacked Union troops in the Battle of Atlanta.
- 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 administration of Israel at the King David Hotel in Jerusalem, killing 90.
- 1991 - Serial killer Jeffrey Dahmer was arrested after the remains of 11 men and boys were found in his apartment.
- 2003 - U.S. forces attacked a compound in Iraq, killing Saddam Hussein's sons Uday and Qusay.