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National days, ongoing national weeks and months, and global observances for April 23, 2026. Plus historical events and birthdays.
These observances last the full month; this date is part of that month-long celebration.
Showing the first 12 on this date; there are more month-long observances. See the full months list for April.
International and other global observances on this date (may include days, weeks, or months).
Events that occurred on April 23 throughout history
President Theodore Roosevelt signed into law a bill establishing the U.S. Army Reserves.
Hank Aaron launches his career homerun tally with his first of 755 playing for the Milwaukee Braves. The Braves beat the St. Louis Cardinals 7-5.
Doctors at Massachusetts General Hospital transplanted artificial skin developed by Ioannis V. Yannas with a research team at MIT for the first time. They created the artificial skin using a combination of cowhide, shark cartilage and plastic.
