If you check the official website for
Disneyland, they post them pretty far ahead.
I am going to be there in July, and here are the times for the 17th. I believe this is pretty typical 'time wise' for the summer.
Parade of Dreams - 4 p.m. and 7;45 p.m.
Fireworks - 9:25 p.m.
Fantasmic - 9 p.m. and 10;30 p.m.
Snow White musical - 12;30, 1;45, 3;00, 5;00, 6;15 p.m.
all of those are in Disneyland Park.
The next group are in Disney's California Adventure
Block Party Bash - 5;15 p.m.
Disney's Electrical Parade 8;45 p.m.
Disney's Aladdin, a musical - 12;35, 2;05, 4;20, 6;05 p.m.
This will give you an approximate idea. I got these times off the Disney official website for the date July 17th.
Hope this helps