Well the new Michigan law has citizens pretty pissed that there dogs are flipping out between 9PM and 11PM and many seem to be heading down to township meetings in droves demanding fireworks are evil and a disturbance to all peace (from those I have heard complain, it seems to always be the dog that drives them to the edge of actually calling). Having looked at a number of local noise ordinances, most only allow for noise between 0-60 decibels past 9PM which basically allows for a Normal conversation at 3'. So basically I would think you could always get a noise violation for igniting any firework at any time of the day if you live in a residential area.
This is where it gets fuzzy, the law states "A local unit of government may enact an ordinance regulating the ignition, discharge, and use of consumer fireworks. However, an ordinance enacted under this subsection shall not regulate the use of consumer fireworks on the day preceding, the day of, or the day after a national holiday." Does this trump the noise ordinance as well or since the noise ordinance was not "enacted under this subsection" (whatever that means) will cops still be at peoples doors to issue $100 noise violation tickets when there oversensitive neighbors make a phone call?