I always call the main Disney line for info, but if you want to still check it online---you can.
On the main Disney site, click on WDW. Then, go to the park hours for each individual park and click on a specific date. It will show you what is going on that particular day, including the daytime parade schedule and the "night show" times.
But, since I like to doublecheck everything before I make my final dining reservations, etc, I always call and ask them to check it on their computers.
Everybody neat and pretty? Then, on with the show! -MMC