Are there longer speed ups later in the game?

Right now I am pre-season and on my 37th day. Are there speed ups beyond 8 hours? Right now I don't need much more than 8 hours, but 24 hour speed ups would be great when I get to the higher levels if there are any.

I've seen some future builds that take months! I know buffs will reduce the time but even with some of the buffs I've seen some players have like 55 day wait times.