In SX Microcontrollers, SX/B Compiler and SX-Key Tool, c-isaac wrote: I don't know if this helps anyone but it's kind of interesting. I learned it in my very first programming class at UCSD in 1981. We were learning the engineering progamming language of the future, Fortran IV... with punchcards on a Burroughs. For any given date it calculates the day of the week. Here's the wiki: [url=http://en.wikipedia.org/wiki/Zeller's_congruence]http://en.wikipedia.org/wiki/Zeller's_congruence[/url] Chris I. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=338263#m338533 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)