What day/time should you post a new video and why?

At the moment I'm doing a Monday upload (in Australia, which is generally Sunday for the U.S). I'm still not sure what time of day is best for uploading, or even if Monday is a good time- but I think it'll be a game of trial and error. For now, I think I'll stick to Monday's though, consistency must count for something, right? :)
TubeBuddy says for me to upload on Friday at midnight. Not sure why.

I upload whenever I get a video done, but I schedule my videos to be published at noon every weekday. Noon because I'll always be awake and probably able to get to a computer if I need to do anything when it publishes.