U.S. federal holiday on July 4 Independence Day, known colloquially as the Fourth of July, is a federal holiday in the United States which commemorates the adoption of the Declaration of Independence on July 4, 1776, establishing the United States of America. 666,463 views on July 4, 2016 — Wikipedia's most-read article that day. Also most read: David Reimer, Kevin Durant, Nick Kyrgios, UEFA Euro 2016. Wiki link