Here is another site that permits you to immediately convert dates for American and English events only, and excludes the other countries mentioned earlier. Click on "Gregorian Calendar" on the left, first, then on the year, month and day if you wish to learn of the weekday of an event here.
http://utopia.knoware.nl/users/eprebel/Calendar/Perpetual/
To subscribe, change options, or unsubscribe please see the instructions at
http://listlva.lib.va.us/archives/va-roots.html