OCCal is the calendar product used at Oberlin College. It is part of the OCApps suite of applications— along with OCMail—that is powered by Google Apps for Education. 

OCCal provides time and contact management via a web application. It allows users to synchronize their OCMail contacts with a web-based calendar. Users may create multiple calendars - such as a work calendar, personal calendar, etc.  Users may also have the information be private, public, or open only to oberlin.edu users.

You can access OCCal at occal.oberlin.edu. Log in using your ObieID credentials. It also is available by selecting "Calendar" in the upper-left navigation bar from the OCMail web page.

Set up your calendar(s) on CIT Wiki:
OCCalendar