How to run systemd timer every five minutes

The syntax to run a systemd timer every minute is:

OnCalendar=*-*-* *:00,05,10,15,20,25,30,35,40,45,50,55:00

i.e. run it on the first second (:00) of every 5th minute (00,05,10,15,20,25,30,35,40,45,50,55).

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