According to St. Bernard Parish ordinance, here are the times when fireworks can legally be used in the parish surrounding the 4th of July celebration:
From June 25 through July 2, fireworks can legally be used from 9 a.m. until 11 p.m.
On July 3 and 4, fireworks can be used from 9 a.m. until 11 p.m.
On July 5, they can be used from 9 a.m. until 10 p.m., when all use of fireworks must end for the 4th of July period.
Any use outside these hours would be considered illegal disturbing of the peace.