Setting crontab

Hey all, I would like to know how to set a cron job to run from 8:15 am to 4:00 pm? Or do I have to do this in 2 seperates cron? Thanks!

do you want the job to run two times. at 8h15am and 4h00 pm. is that it?

sorry to mention that I want the job to run every 15 minutes, can I do this?

15,30,45,0 8-16 * * * /my/dir/myscript.sh

Seems correct.

I was told by some people that it is only possible to set start job that start and end at the same time, so i wasn't sure if I am doing the right thing