Brevan
Refugee
My solution for early-game-lack-of-watch was to just look at the Sun's position. I'd estimate it's progress to or from the horizon relative to being overhead (Noon).If you're in a building, just look out a window. You can sort of do the same at night with the position of the Moon or the light of dusk/dawn. During a cloudy day it can be a bit tough, but it's usually pretty clear where the sun is behind the clouds. It was super effective, so I don't often use a watch even when I could make one.