The suburbs of Washington DC has 4th of July fireworks - people away from Washington DC set off their own fireworks - but this is the biggest of all 4th of July firework shows in Washington DC. At the 2:00 mark - the first pre-finale cakes with complete with flashing titanium salute volleys explode over the Monument. The grandest of finales starts at about 12 minutes into the display. The climax of the grand finale happens at the 16:37 mark. Happy 4th!