What is the Fourth of July?
Independence Day is 4 July, marking the adoption of the Declaration of Independence in 1776. The Continental Congress actually voted for independence on 2 July, which is why John Adams expected the second to be the date people remembered. It is a federal holiday, and when the 4th falls on a Saturday the observed day off moves to the Friday before, or to the Monday after when it falls on a Sunday. This countdown targets the 4th itself.
The days either side carry most of the load. Public fireworks displays are permitted and booked months ahead, campsites and short-haul flights for the surrounding weekend sell out early, and road traffic peaks on the afternoon before and the evening after. When the 4th falls on a Tuesday or a Thursday many employers close the adjoining Monday or Friday, which turns the week into a four-day one and empties offices for longer than the holiday itself. Consumer fireworks are legal in some states and banned in others, and a number of cities have moved to drone or laser displays after dry summers made the traditional kind risky. Animal shelters and veterans' groups campaign each year about the noise, and shelters report their busiest intake of the year on the 5th.
Denmark has held the largest celebration outside the United States since before the First World War, in the Rebild hills of Jutland, paid for by Danish-American emigrants. The Philippines kept the same date as its own independence day until 1962, when that moved to 12 June, and the July date survives there as Republic Day. Expatriate clubs in London and Sydney run smaller versions. The detail people get wrong is the signing: Congress approved the text on the 4th, but most delegates put their names to the engrossed copy on 2 August, so no single ceremony matches the date the country keeps.
The next one falls on Sunday, 4 July 2027, and this page counts down to the midnight that starts it in whatever time zone your browser reports.