Running a cron job 3 times (1 pm, 2 pm and 3 pm for example)?

Question

I am not sure how to run a cron job at 3 specific hours every day. I want to run it at 1pm, 2 pm and 3pm.

Is it possible, using a single expression?

Answer 1

As lenik stated, it can be done in single expression.

0 13,14,15 * * * 

Check this geedkstuff link for more examples