I guarantee it will not be on a Sunday no matter what happens.
It also won't be on a Saturday.
Guess what?
There is only a 4.23% chance it will be on a Monday!
How do I know this?
History!
The most likely day is a Thursday at 37.64%...
But even that is just over a third... Oh by the way this is based upon marketing data compiled over the last 30 years with console game announcements. I was able to gain access to 18 separate databases and by cross-referencing them against each other I was able to create a model for game announcements. There is a factor that I had to include to skew the data, I had to separate the games lists by genre because there were so many sports games it was insane, and they obviously followed the cycle of the sport, so they had to be excluded. I then weighted by genre and exclusivity so that I could account for console specific time frames and religious holidays (Japanese consumerism vs US consumption).
Ultimately what I came to was that if an rpg released for multiple consoles was to occur it would be announced on either a Thursday or a Tuesday. Well, based upon historical evidence.
We shall see!