See Archdiocesan page here
Scroll to the middle of the page to see Monthly Calendars.
VIRTUS ONLINE
https://www.virtusonline.org/virtus/reg_0.cfm?theme=0
Click on the link aboveOn that page click on "VIEW A LIST OF SESSIONS"
From the drop down menu look for "LOS ANGELES - SAN GABRIEL REGION"
Click "SELECT"
A list of sessions will appear. Be sure to read all instructions on how to register online, or contact the Church directly.