Is this the crontab bug or limitation that 0,15,30,45 0-13,18-23 * * * progname doesn't work at all, therefore, I had to split into two lines: 0,15,30,45 0-13 * * * progname 0,15,30,45 18-23 * * * progname We are running 4.1bsd. ...ittvax!qumix!dennis