[nbm]

Sure, but we’re so far away from that scenario here. In that ideal world you describe above, the project leads would have already talked through the requirements and processes involved with the environment and/or service owners and/or release engineering groups. Not all changes are of the sort where “if the tests pass, it’s safe to ship it”, and that requires learning what is acceptable and not, and talking to the relevant people when you’re out of scope.

Environments like those described often have continuous push and automated slow rollouts with health checks, so the idea of doing something on a Sunday isn’t that strange at all.

That said, there’s something to be said for not trying to locally optimize. If you push bad stuff on Sunday, you’re messing up a bunch of people’s well-earned rest and recovery time from work. You push bad stuff on Monday, and everyone’s there to help you fix it without the stress of lost family or other commitment time.

The difference is 24 hours, which likely isn’t going to make or break anything. It’s easy to get sucked into believing things like that matter when they don’t.