Got the following info from the Parade website not from the Coaster website:
"Coaster Train Schedule:
The Coaster will expand its northbound and southbound train schedule into Oceanside. The Coaster will leave San Diego at 8:20 a.m. and arrive in Oceanside at 9:20 a.m. in ample time for visitors to view the parade. The Coaster will head southbound leaving Oceanside at 11:42 a.m. 12:45 p.m. and at 3:10 p.m."