The ICAL calendar format has revolutionized our ability to share calendar information with each other! Many organizations share their calendars online, and simple Google searches will lead you to a link thta ends with ".ics". This link will allow your calendar program (iCal on a Mac, Google Calendar, etc.) to display the calendar.
Below are links directly to the iCAL server for these calendars. Simply copy the link, then paste into your calendar program.