From my own experience I would guess they know their orientation at all times.
In Guadalajara, Mexico, where I live. I've seen it first hand. People of certain age that lived near the center of the city use an absolute system for navigating the city, and to give directions on how to get to places with phrases like "up the river", "down the river", of an old river no longer existent that used to pass through the center of the city. And they always know which way goes to the center of the city, even when going outside the city center and to unknown neighborhoods. My father is one of such people.
In Guadalajara, Mexico, where I live. I've seen it first hand. People of certain age that lived near the center of the city use an absolute system for navigating the city, and to give directions on how to get to places with phrases like "up the river", "down the river", of an old river no longer existent that used to pass through the center of the city. And they always know which way goes to the center of the city, even when going outside the city center and to unknown neighborhoods. My father is one of such people.