Using Excel 2013, I need a formula that returns the date of the fourth Thursday in a given month.  For example, if the date in

A1 = 11/2/2012
B1 needs a formula that references A1 and returns 11/22/2012

or if

A1 = 11/1/2014
B1 needs a formula that references A1 and returns 11/27/2014.

You can use this formula:

=DATE(YEAR(A1),MONTH(A1),CHOOSE(WEEKDAY(DATE(YEAR(A1),MONTH(A1),1)),26,25,24,23,22,28,27))

This formula has been derived from http://chandoo.org/wp/2009/11/25/findout-thanksgiving-date/

Perfect.  Thank you, Hans, and best regards.

Thanks Hans, just what I was looking for.
*I know you posted it a while ago but I was just looking for this answer today.