Each school in the Common App has its own deadline. Search for the college in the Common App and click on it to see information about what is required to apply to the college and its application deadlines. Here are the deadlines in the Common App for Boston College:
ED2 and RD both appear to have the deadline of January 3, although if your daughter is looking for scholarships, it says that the priority deadline for scholarship consideration was November 1.
Was the counselor talking about the UC system (University of California) or Cal State system? These have their own applications (do not use the Common App) and have a November 30 deadline for all the schools in the system.