[Illniyar]

No it's not. If the development pipeline breaks on Saturday night there is absolutely no need to go fix it right away.

You should have a method to deploy hotfixes to code that bypasses your development pipeline though, in case the development pipeline breaks while you need to fix production- because you must be able to fix PRODUCTION even if your dev pipeline is broken ( because again your dev pipeline, while important, is not production)

[dylanowen]

I feel like your example exactly describes why the development pipeline is production. Just because the critical hours of the system are different doesn't mean it's any less important.

[Illniyar]

I have never worked in a company where it is okay for production to be down at any time. Critical hours or not.

And if production is down even if there is just one user, it is all hands on deck.