Local Indian reservations are the biggest fireworks source up here and no one is going to stop them. Last night (July 10) they stopped at my place around 10 PM. Off Reservation fireworks stands can open June 28 and must close July 4th. On Reservation they usually open just ahead of Memorial day in
MAY and close when they run out in July whatever day. Nothing stops people from buying On Reservation and driving them off.
Wait, there's more..... They open the Reservation stands back up for New Years and we get to listen to them then as well.