FWIW, the COBOL functions calculate number of days from a date, December 31, 1600 in the Gregorian calendar, for those of you playing the home version of Jeopardy. As I understand it, perl can call a library of public domain libraries to perform nifty data calculations, although I am not the best one to address that. The 'samples' page of CI programming might prove worth a visit: http://www.denkor.com/hp3000/command_files/samples.html. There is a link to "days.xeq - Returns the number of days since December 31, 1899 (in the RETURN_DAYS variable)". > -----Original Message----- > From: Michael D. Hensley [SMTP:[log in to unmask]] > Sent: Tuesday, September 22, 1998 12:31 PM > To: [log in to unmask] > Subject: Re: [HP3000-L] Date Intrinsics > <snip> > Or, if you are using COBOL, use the DATE-OF-INTEGER, INTEGER-OF-DATE, > DAY-OF- > INTEGER, and INTEGER-OF-DAY functions. <snip>