OrgSync provides each user a personal calendar that aggregates all events from your organizations and events you've RSVP'd to. Access this calendar by clicking on your name in the top right of the screen then choose Events.
The search box and filters on the left side of the page make it easier to find and filter events. Select a day to view all events occurring that day and select an event to view more specific information like where & when. Use the left and right arrows in the top right of the calendar to change months.
You can export this calendar through the Subscribe button in the top left of the page. This will initiate a pop-up that provides several export options for iCal, Outlook, Google Calendar, and more.