Notifications question

Does the phone try to guess where I am going to give me the time it will take to get there? For example... Usually on Saturday nights my family dines at the same restaurant. We have been to the same place most Saturdays since I upgraded to iOS 7... Though not last weekend. Anyway... Right now.. It says it will take me 34 minutes to get there. I never mark this event on my calendar... Is it looking at my past history for Saturday nights? The other day it was giving me the time to some other place... I didn't know why but I'm guessing it was giving me the driving time to a location I frequent on that day of the week?

 

I knew it did it for home... But didn't realize it was always doing that. Thanks!