If you want to repeat a job always at the same time you can convert it to a cron job. With a cron job you can repeat your job (yearly, monthly, weekly a.s.o.), depending on what you have set.
You can either convert a job to a cron job by first going to "Current Jobs":
Or you can create a cron job under "Cron Jobs" by changing the tab when creating a job and using the setting options for cron jobs:
You can also deactivate or activate a cron job, by toggling the switch on or of:
If you click on the cron job you get an overview of the settings:
And by changing the tab to "executed jobs" you can see when the job has started, finished and whether there were any error messages: