The Declaration of Independence was signed primarily on August 2, 1776, although America250 centers on its adoption on July 4. The distinction separates the date Congress approved the document from the date most delegates signed the engrossed parchment copy.
Congress adopted the Declaration on July 4 after debating and editing the text. The final parchment was prepared afterward, and historians generally conclude that the main signing ceremony took place on August 2 in the Pennsylvania State House, now Independence Hall.
The popular belief that every delegate signed on July 4 comes partly from the document’s date and from later recollections by figures such as Thomas Jefferson, John Adams, and Benjamin Franklin. Evidence about individual signatures and attendance has made the chronology more complex.
Some delegates signed after August 2, and the exact participation of every signer on the main date remains a historical subject. The important America250 distinction is straightforward: July 4 marks adoption, while August 2 marks the principal signing event.