Thanks for the question Renee!
As they say "Give a person a fish, and they're fed for a day. Teach a person to fish, and they can eat for a lifetime!" ;-)
So in the spirit of this wise refrain...
My "teach to fish" answer, is: If you go to the WDW main web site
HERE, and select the theme park you are interested from the "Parks" menu, you'll find a sub-menu on the left that says "calendar." Just click on that link, and you'll find a calendar for the selected park. Then select the month and day you are interested in (first select the month from the top-right pull-down menu, then click on the specific date box in the month you selected), and you'll find the timing about all key parades and shows for the day at that park. On the single-day view, you can click "next day" and "previous day" to easily browse through several dates.
If there is no information provided, that likely means that Disney hasn't finalized their schedule yet for that date. Often the information is posted six months in advance, but sometimes it isn't as far in advance. It also sometimes gets updated, so be sure to check again as your arrival date approaches.
My "give a fish" answer is: Based on using the approach I mention above, I see that Fantasmic! is offered only on June 13, 17 and 19, and each of those days it is only offered at 9pm. Again, please be aware that schedules change, so I highly recommend you re-check as you get closer to your arrival date.
Hope that helps! Please write again if you have follow-up questions.