Q. How long is one renewal?
Typically it is another 21 days; but there are exceptions. To find out the return date for a particular item, go online to "My Library Account" at https://csulb-primo.hosted.exlibrisgroup.com/primo-explore/account?vid=01CALS_ULB§ion=overview~S7
You can find out the return date for an item(s) and renew the item(s) all at the same time!