Does anyone have code to determine holidays in the past and future?

I am considering using Excel to determine the number of working days between two dates, but it looks like the holidays must be hard-coded. Does anyone have a reference to code that is used to determine holidays in the future and past (years in the future/years in the past)?

RE: http://www.excelforum.com/excel-prog...two-dates.html

Here is a set of functions and subroutines that may be used to determine any holiday for any year: http://www.cpearson.com/excel/holidays.htm