> You also need a function Weekday, to determine what day of week a given date is.
> Zeller's Congruence is your friend here.
> Look at John English's 'Ada 95: the Craft of Object-Oriented Programming' chapter 4
> (http://www.it.brighton.uk/staff/je/adacraft/ch04.htm)
sorry, wrong address this is it:
http://www.it.brighton.ac.uk/staff/je/adacraft/ch04.htm
/Björn