Notes • July 4, 2025by johnataylor on TwosFun Facts—4th of July Edition: While the Declaration of Independence was adopted on July 4th, 1776, most of the 56 signers didn't actually sign it on that date. The official signing took place later, primarily in August. Thomas Jefferson, John Adams, and James Monroe all passed away on July 4th, adding a peculiar twist to the holiday's history. As the Revolutionary War raged on, fireworks were first used to celebrate Independence Day in 1777, marking the first anniversary of the Declaration of Independence. Americans consume an estimated 150 million hot dogs on the Fourth of July. Independence Day didn’t become a federal holiday until 1870. Philippines also recognizes July 4th as a day of independence, commemorating their own liberation from the United States in 1946. Nathan's Famous Hot Dog Eating Contest is held annually on July 4th.