Every day (only taking a break for 3 days in the last 12 months) they’ll do a few posts at random times but there’s always an intense streak at the start of the day. Screenshots of the times their posts are made:
On some days they start exactly 5 minutes early.
Within the hour-long window that the script runs the posts are spaced out but often they happen within seconds of each other, something a human wouldn’t do. Or 3 posts per minute, that kind of thing.
The screenshots towards the bottom of the list show it more often.