>>2240837it depends on location, time of the year and time of the day, but rarely is the sun directly above you.
You'll likely always have a shadow, even if minimal in size. It's easier to look at your shadow instead of looking up at the sun. Even a small shadow has a general direction, point the hemisphere correspondent watch marker to the opposite way of your shadow. You can rotate your body to widen or shorten your shadow to get a better perception of direction if it's really small.