I'm not sure if this exactly fits here so if it doesn't please move it to the correct place. I have found several lots that produce fireworks displays, but they only produce on January 1 and July 4. What I need is a way to have fireworks every night. I'd rather stay away from a mod that messes with the game date to do it, but rather a lot or prop that produces fireworks every night. Thanks!
The fireworks is a timed effect prop by Maxis, one for January 1st and one for July 4th. You need to find the exemplar of the prop within the game files, make a copy, and change the properties that set the date. You can't really mod it to go off every night, though, as this would mean constant fireworks as long as you run the game (depending on the speed setting, you'll see the effect for at least one or even several in-game days). Unfortunately, I don't have time for creating mods at the moment, but maybe RippleJet can step hin here. :)