Here is a free Holiday calendar for your new Ward Calendar

Here is a free US Holidays ical file for anyone wanting to add holidays to the new ward calendar:

http://buildzion.com/downloads/US-Holidays.ics (perpetual, with Easter for 5 years)

Also here is a list of holidays for other countries, fyi:
http://calendarlabs.com/ical-calendar-holidays.php (for current year)

I created the US Holiday one and I offer it freely with no restrictions.

PS The perpetual calendar link above no longer works because there is a 2-year time limit for repeating events. However, the 2nd link will probably be all you need

For Germany
- here is a link to iCal (ics format) calenders, which can include Public and/or School holidays.

http://www.schulferien.org/iCal/