system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do most MMO's have reset on a Tuesday?

I can vouch for FFXIV and WoW. I think Overwatch is also Tuesdays.

What is it about a Tuesday?
gpt
Balance of staff availability and user traffic.   Regular tech staff only work Mon-Fri.   With network support center running nights and weekends.  

You never change anything on Friday, thats just rule #1. 

You need Monday to catch up on everything from the weekend.

So that just leaves Tuesday Wednesday and Thursday.   Tuesday is earlier in the week so you can see what flak appeared and have option to do hotfixes.    You have less opporrtunity window  if you do Wednesday and no window if you do Thursday.