Update: I have found how to make WebCalendar allow subscriptions. If you are using an iCalendar based software use http://www.veryspatial.com/calendar/publish.php/?user=public as the subscription address and you should receive all updates to the calendar as we publish them.
We have just added over 20 new events to the calendar, so be sure to check those out to figure out where you want to take your vacation this year
We are primarily pulling from the AAG, GITA, and URISA calendars to fill out our calendar. If you know of any other organizations or companies that keep lists of upcoming events please let us know so we can include their announcements in our calendar.