I am too late. I knew this would be the top post, even though the arguments brought forth in the blog post are utterly stupid. I would even go so far as to say their arguments are presented in bad faith, because I refuse to believe the author actually thinks that’s how it would go. (They have some seriously awesome posts, I most highly recommend qntm.org/mmacevedo)
With time zones:
you Google what the timzone offset is (aka at which point in your local timezone the sun rises over there). Considering this sunrise time you then have to make a judgement if your uncle would be awake now.
Without times zones: you Google at which time the sun rises over there. Considering this sunrise time you then have to make a judgement if your uncle would be awake now.