SmokedMeat
Gamer™
all npcs had a 'routine', some would occasionally change up depending on the time of year and where you are in the story, and a certain few were season specific (also dobuita street gets decorated when you close in on christmas)
speaking of the time of year, the weather would change depending on where in the calendar you are (and you also had the ability to switch over to the real weather patterns of yokosuka in 1986/1987), the injured kitten would begin to heal over the course of the year (although this was accelerated if you got through the story quicker), and the vegetation would start to change once you got into spring (ryo's cherry blossom tree being a giant doomsday clock when it comes to taking so long you get the bad ending)
I know, I had the game. Everything had a predetermined routine/ dialogue until you reached a certain point and then it would change to a new predetermined routine/dialogue.
Sega made interesting use of the Dreamcasts clock, but it also did so with Clockwork Knight 2, and even Sonic Adventure which I recall having Halloween decor in the main hub in October.
My experience with Shenmue wasn't as rosy as everyone else's. For me the curtain was pulled back and the world just didn't pull me in. Where some people found it amazing to walk into a store and examine every candy bar I found it pointless. The saving grace for me was the arcade. Forget the black car, I'm playing Space Harrier.