> I wonder if this is like an implanted memory that you have or what? As pointed out below, it's because in my normal latitude (south UK) the sun moves from le

> I wonder if this is like an implanted memory that you have or what? As pointed out below, it's because in my normal latitude (south UK) the sun moves from left to right (as you face South) and at a similar distance below the equator, it goes from right to left (as you face North). So at home when I look at the Sun I know that a couple of hours later it be quite a bit to the right of where it is now, and I can use this to assess where shadows will be.