I haven't been paying close attention to all things WDW, but is Disney slower coming out with showtimes lately? A friend was looking for Happily Ever After for August and a time wasn't listed on WDW's site (or Touring Plans). I was pretty sure they would have it. Is the best guess 9PM for the end of August?
Looking at the travel agent calendar for August, https://media.disneywebcontent.com/StaticFiles/ParkHours/WDW_TAC_2017Aug.pdf, it shows HEA at 9:00 every night that does not have the Halloween party. Disney's site lists them those same nights https://disneyworld.disney.go.com/entertainment/magic-kingdom/happily-ever-after-fireworks/. Just plug in a date and it will show the time. They are under "Entertainment."
I see now on Disney's site that it is ever night except the Halloween party night on 8/29. Thanks for clearing that up!