Wikipedia contributors. (2024, October 23). John Adams. In Wikipedia, The Free Encyclopedia. Retrieved 21:06, October 24, 2024, from https://en.wikipedia.org/w/index.php?title=John_Adams&oldid=1253011381
On July 4, 1826, the 50th anniversary of the adoption of the Declaration of Independence, Adams died of a heart attack at Peacefield at approximately 6:20 pm.
Jefferson died on July 4, 1826, at 12:50 p.m. at age 83, on the 50th anniversary of the adoption of the Declaration of Independence.