If you for some reason, wish to customize when your cronjobs run, you just need to replace the magic @interval with the normal cron syntax.
This is the crontab you have if you have followed the installation guide:
@hourly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs hourly
@daily /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs daily
@weekly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs weekly
@monthly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs monthly
Let us now change the hourly cronjob to run at 5th minute of every hour, which means that it would run at 01:05AM, 02:05AM, 03:05AM etc. instead of running 01:00AM, 02:00AM, 03:00AM etc. Change this:
@hourly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs hourly
To this:
5 * * * * /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs hourly
Next let us change the daily cron job to run at 03:00 AM instead of the default 00:00AM. Change this:
@daily /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs daily
To this:
0 3 * * * /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs daily
While we are at it, let us also change the weekly cronjob to run at 04:00AM every week on sundays. Change this:
@weekly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs weekly
To this:
0 4 * * 0 /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs weekly
Finally, let us reschedule the monthly cron job for running at 01:00AM the first day in every month:
Change this:
@monthly /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs monthly
To this:
0 4 * */1 * /home/mailguardian/mailguardian/bin/python /home/mailguardian/mailguardian/src/manage.py runjobs monthly