Hey, not just the 'muricans.....don't forget our Canadian friends to the north. Not too far apart in terms of dates. In Detroit, the firework display is split down the middle (in terms of date) and they are shot off of boats in the freighting channel of the Detroit River so Windsor can participate as well. Seen it from both sides and the water.
I'd type more but I just finished with my boom-sticks. Gotta find a finger and a thumb.