> >There might be one between November 2003 and January 2004, though, which is >different from the one between November 2003 and January 2003. By adding >the year in this case, you get back to simple linear averages. Depending on the purpose, the calendar is then a circle, or a spiral. _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist