I think this is something in Node Red (possibly a flow that is misconfigured). Everyday at 5:18pm every roomba in my house begins cleaning. I think this is because of something in HA. As all my automations occur in Node Red I think it is because of a Node Red Flow.
The problem is I have no idea how to diagnose this, but I can tell you that I do not see anything in Node Red that calls a service at 5:18pm.
Is there a place with Node Red logs perhaps where I can find out?
On the right side where the debug is choose the info panel button. Put the entity in the search box and it will return all the nodes that have that entity.
The logbook entry with supervisor as the user, it is likely NR. Either disable one or a group if there are a lot and see. You could disable them all first to see if it is from NR.
On the bottom of the node settings page there is a disable box. Check it and deploy.