The fireworks can change at different dates and times of year.
At DHS, look for "Star Wars Galactic Spectacular"
and "Fantasmic!" (which is much more than a "fireworks show.)
DHS Christmastime finds "Jingle Bell, Jingle BAM" fireworks, too.
MK has Once Upon a Time fireworks.
Add to that a "projection show" Happily Ever After.
Epcot runs IllumiNations at "park closing time" ("regular hours" closing)
which is most-often 9:00PM (9:30PM during Christmastime) nearly every night of the year.
That CAN change for special occasions.
DAK does not offer any fireworks, but there is a formal "evening spectacular" called
"Rivers of Light."
The only park with a "formal" opening show is MK.
That show takes place on the castle stage about 6 minutes before MK is scheduled to
OPEN ("regular hours open time") every day.