Arizona State Museum Open Monday through Saturday 10 a.m. to 5 p.m. (the store is closed from 12:30 to 1:00 p.m.) and on Sunday 12:00 noon to 5 p.m.
Kitt Peak National Observatory The Visitor Center is open from 9am until 3:45pm. Guided tours begin at 10am, 11:30am, and 1:30pm. Reservations for evening viewing must be made well in advance.