[protomyth]

I've worked in places that required a checklist worthy of NASA to deploy software, and also had blackout periods where no changes could be made to the system without an executive team sign-off[1]. The thought of any of them deploying 5 times a day is just beyond anything they would be allowed to do. I would expect most enterprises are closer to the event deploys then rapid, multiple deployments.

In that type of "event" style deployments, week night deploys probably are safe, but anything scheduled for Friday is trouble.

1) common in agriculture during harvest season