According to LNM, the fireworks are 3 September:
Mariners are advised that a fireworks display will be held on the Rhode River, near its confluence with Cadle Creek at Mayo, MD,
on Saturday, September 3, 2011 (rain date September 4 or 5, 2011) at 8:30 p.m. Mariners are urged to transit the area with
caution, keep a sharp lookout for other watercraft in the area, and are reminded to heed the directions of patrolling law
enforcement and public safety officials; absent specific guidance, mariners should remain 200 yards from the fireworks discharge
barge in approximate position latitude 38°53’01” N, longitude 076°31’25” W. For any comments or questions, contact Coast
Guard Sector Baltimore, Waterways Management Division, at (410) 576-2674 or
Ronald.L.Houck@uscg.mil. Chart 12270