If you use Microsoft Outlook 2007, Microsoft Entourage 2008, or Apple iCal, you can subscribe to this calendar feed. The calendar will update automatically, provided that your program's subscription tool refreshes the calendar feed periodically.

Enter this URL in your calendar application to subscribe to the WURHA calendar:
http://www.google.com/calendar/ical/calendar.wurha%40gmail.com/public/basic.ics

Also, if you are a Google Calendar member, you can add this to your personal calendars by clicking on the "plus" button in the calendar above.