The Disneyland Resort website has published times for three days in April that will have the Paint the Night Parade at Disney California Adventure Park. Times are revealed for April 13th, 14th, and the 15th. The parade will return with the start of the Pixar Fest on April 13th.
Revealed times for the first weekend include two showings a night, first parade at 8:45PM and a second at 10:45PM. With the second showtime being 10:45PM for the first weekend, we can expect an 11pm or later closing times for Disney California Adventure Park over the summer.
We expect more times to be revealed as park hours become finalized for the extent of Pixar Fest.