Annual Firemen's Fireworks Spectacular - Harbor Island Park Date: 07/04/12 Hours: 9pm Ages: All Address: Mamaroneck Ave. S. & E. Boston Post Road - 914-777-7784 Mamaroneck, NY 10543 townofmamaroneck.org Description: Annual Firemen's Carnival begins at 7pm; fireworks begin around 9pm.