We avoided Friday deploys because we didn’t have enough usage over the weekend; traffic was oriented on M-F working hours.

It meant that issues would sit undiscovered over the weekend until Monday morning, and lead to a week starting in chaos.

Much better to get fast feedback while the deploy could be monitored against prod traffic.

We did Monday morning IST, on a build we declared valid on Friday afternoon - no pressure to declare premature victory there. The cherry on top was sprint demos first thing in the morning PST so when I first joined the project the demos got interrupted on a regular basis.

I don’t think most people fully appreciated how much work a handful of us did to make sign off faster and deployment less error prone.