please review this cron syntax

UNIX Solaris
1

Dears
if i want to run this job every Saturday at 6 AM that will be the code

* 6 * * 1 cd /export/home/jenova ; ls -ltr >> $HOME/jenova_dir
2

0 6 * * 6 cd /export/home/jenova ; ls -ltr >> $HOME/jenova_dir

3

thanks for your effort