Where I am from, civilian fireworks are pretty much happening only during NYE. It is roughly 2 hours. The rest of the year fireworks are pretty much happening on some special shows or celebrations. You almost never hear fireworks the rest of the year.
Where I live now people like to shoot fireworks at random. I used to live near private small garden area and fireworks would fire on weekly basis all year long. It is even forbidden to do it at random, but that is not stopping people for some reason.
Wanted to add also that in my homeland fireworks are sold typically in hunting shops and I guess are strictly regulated while at the country I am at right now you can buy loads if fireworks in a grocery store if some sort of a festive celebration is around the corner.