- Guatemala adopts constitution
- Methylenedioxymethamphetamine (MDMA) became a Schedule I drug in the United States.
- Tornado outbreak in United States and Canada sees 41 tornadoes hit Ohio, Pennsylvania, New York and Ontario, leaving 44 dead
- Tornadoes in Pennsylvania, Ohio, New York State & Canada kill 88 & injured more than 1,000
Day of the Week: Friday