If the Sun is high and the shadow from a person falls in the direction to the north, then now …

If the sun is high and the shadow of a person falls in the direction to the north, then now is noon.
At noon, the sun is always towards the south.
The shortest shadow occurs at 13 o’clock, and the direction of the shadow from vertical objects will be north.
If the sun is hidden above the clouds, put a knife on your fingernail – even a small one, but it will appear and it will become clear where the sun is.