Yes, there is a juvenile curfew in the City of San Ramon. San Ramon Ordinance B7-231 prohibits juveniles from loitering or being in public Sunday through Thursday between 10 pm and one half hour before sunrise and Saturday and Sunday between one minute after midnight and one half hour before sunrise.
The following exceptions apply:
When accompanied by a parent, legal guardian, or other adult person entrusted with the minor's care and custody by a parent or legal guardian; or when on an errand for a parent; or when going to or returning directly home from a bona fide meeting, dance, party, recreational activity, night classes, study, library, church or school function, or theater; or when going directly to or returning directly home from lawful employment.
Curfew is enforced throughout the year. This curfew is separate from the graduated driver license requirements set forth by DMV.