So i just saw a post about not pushing to production on Friday's and that reminded me of something.

A team we are working with (we needed help on something so we got another company to send us a team and do it for us) recently push to production on a Friday at around 5pm.

We didn't know that they had done it until a shit ton of errors started happening and we had no idea why (it was working so far, none of us did anything, so what the fuck is going on).

To make things better, one of my colleagues tried calling them and they wouldn't answer the phone. They knew what they did, so they went home before we could notice it and we had to correct their mistake.

We had everyone calling us saying they had gotten an error, and they needed to get home but couldn't because of it (it messed up a process that only happens at the end of the day before people go home. I can explain more in the comments if anyone is confused, or just wants to know).

Eventually everything was solved, but that was a very stressful ending of the week.

So yeah, don't deploy on Friday's please and thank you