It's ready when it's ready.
So much this^^^^^. No set schedule past not even looking at the beer for at least a week.
+1. It varies. Don't judge it using a calendar. Look at it and taste it.
It's like when someone asks about cooking. How long do I cook it? Until it's done. Sounds trite, but it's the right answer. There are so many variables involved, that there just isn't a good time-based answer. Learn to recognize the signs, and use those.
+ 1 I most definitely agree with this. I taste along the way to see how a particular beer is coming along then bottle or keg it at the proper time.