National days, ongoing national weeks and months, and global observances for August 3, 2027. Plus historical events and birthdays.

August 3, 2027 celebrates National Watermelon Day, plus 4 more. National Watermelon Day on August 3 recognizes the refreshing summertime treat enjoyed at picnics and fairs! And since watermelon is 92% water, it is very satisfying in the summer heat.
People born on August 3
Chemist and spymaster who headed the CIA and a mind-control program (MKUltra).
Actor with award-winning roles on the big screen (Apocalypse Now and Catch Me If You Can) and television (Kennedy and The West Wing).
Business mogul and founder of Martha Stewart Living Omnimedia.
Lead singer and co-founder of the heavy metal band Metallica.
American soldier, journalist and war correspondent who wrote stories about ordinary soldier during WWII.
Events that occurred on August 3 throughout history
The first known letter from North America is sent by John Rut while at St. John's, Newfoundland. The letter was sent to King Henry VIII of England to report on the expedition's findings, note the health of the crew, and outline plans to sail south to search for their lost companion ship, the Samson.
Harvard University wins the first Boat Race between Yale University and Harvard in the first ever American intercollegiate athletic event.
Castle Garden in New York City opens as first receiving station for immigrants in the U.S. The facility processed over 8 million immigrants arriving in the U.S. before closing in 1890.
The American Dental Association is founded in Niagara Falls, New York. Twenty-six dentists were present, representing various local and state dental societies.
The American Canoe Association is founded in at Lake George, New York. The club was created to share cruising tips, host annual meets, and promote canoe sailing, racing, and exploration.
Longer-running observances that include this date.
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