Hello, bug-octave. This statement > str = datestr(day, "yyyy-mm-dd\ndddd\n"); > printf(str); seems to do some extra substituting: > 2009-03-14 > SaturSay > 2008-11-26 > WeWnesWay I'm running 3.0.1 Cheers, Rob -- Rob Mahurin Dept. of Physics & Astronomy University of Tennessee phone: 865 207 2594 Knoxville, TN 37996 email: rob at utk.edu