Author of the linked article here; re marking movement of shadows, I wrote a follow-up that discusses some alternatives, mainly that one: https://possiblywrong

Author of the linked article here; re marking movement of shadows, I wrote a follow-up that discusses some alternatives, mainly that one: https://possiblywrong.wordpress.com/2014/07/05/using-a-watch-or-a-stick-as-a-compass/ https://possiblywrong.wordpress.com/2014/07/05/using-a-watch...