If someone outside of UAHuntsville sends me an invitation from another type of calendar, can I accept the invitation on my Google calendar?
Yes, in most cases, you can. If possible, Google Calendar inserts an Add to Calendar link in the invitation. Simply click the link, and the invitation is added to your Google calendar. Otherwise, if the invitation is in the standard .ics format (such as Microsoft Outlook and Lotus Notes invitations), you can download the .ics file and upload it to Google Calendar.