It's the 4th of July today, which means that it's the marking of Independence Day. Although it's technically a marking of the signing of the Declaration of Independence, I seem to recall that it was described in 1776 as being written a few days earlier and signed a month later.
Still, July 4 is regarded as the date of formal date of independence, so there you go:
Happy Fourth of July! (And don't let those fireworks burn down your house or start a hazardous fire of any other kind, either.)