According to `man 5 crontab`, it looks like that will work. Did you try it? Just make a little test `crontab` and use the `date` command as the command. You should get an email to `root` with the date at the times it runs.
– lurkerSep 26 '13 at 16:32
Hi, thank you for your answer. Yes, it works well. I was not sure of the "00". But it's ok.
– Marie_dSep 27 '13 at 12:16