Cron every hour at a specific time?

Question

Task Schedulers

Please tell me how to implement the following in ISP 5 Lite: I need to run cron every half an hour from 10.00 to 20.00 and every hour from 21.00 to 09.00.
If I understand correctly, then this can be done in two crowns. The first one runs every half an hour from 10-20. For ISP 5 Lite it is:
Minutes - */30
Hours - 10-20
Days of months - *
Months - *
Days of the week - *
I hope so right?
But the second kroner, which should run every hour from 21-9, I can’t figure out how to do it. Tried like this:
Minutes - 0
Hours - 21-09
Days of months - *
Months - *
Days of the week - *
But this way I will get an error when creating such a cron - in general, it is not correct. Tell me, please, and if possible in a detailed version (as I described above).

Answer 1

The first one seems to be correct.
In the second range, otherwise you need to specify
21-23,0-9