Hi,
Thank you for posting in Symantec community.
I would be glad to answer your query.
File-based AV - Updated daily (with SEP's Multiple Daily Definitions, certified content is typically released three times a day Monday through Friday; one time per day on weekends).
Network-Based Protection (IPS)- SEP Security Updates (SU) are generally updated on Weekdays (M-F - no releases scheduled for weekend or major holidays in the United States).
Behavior-Based Protection / Proactive Threat Protection - There is no set schedule. The article linked below contains additional information.
Reputation-Based Protection (Insight) - Continually updated as it is a cloud based detection
How often are Endpoint Protection definitions for IPS, SONAR, and Download Protection released?
http://www.symantec.com/docs/TECH178271">http://www.symantec.com/docs/TECH178271">http://www.symantec.com/docs/TECH178271
Here is the snapshot of my local machine, these are the latest definitions.