City of Berkeley Quit Smoking Intake Questions Spring 2021 Session Information. You are strongly encouraged to attend all eight sessions in a cycle. Those that complete the classes are eligible for a $25 gift card. Spring 2021 Session Dates - April: 8, 15, 22, 29 May: (*3), 6, 13, & 20 *Classes are on Thursdays except for Monday 02/08/2021 Time: 6-8pm