You can add web calendars to any program that supports the iCalendar format. They can also schedule for the calendar to be refreshed automatically so that it is always updated. We provide a feed with all the official Clemson calendar dates.
Add Clemson University calendar to Evolution | (download)
Add Clemson Linux User Group to Evolution | (download)
Note: it will not work in Outlook due to it not conforming with the iCalendar standard. It has not been tested in other programs beside Evolution.