Gas - if you use a bit of logic and what you know from your study of maps and globes it shouldn’t be too difficult. How far north are you? Well, for starters, your opposite would be that far south. Now, just add 180 degrees to your longitude and find that line on the other side of the globe. Where those two intersect is your opposite. and…it’s…just…that…easy
Dang link wouldn’t work for me. It got me to the site alright but wouldn’t find my opposite spot on the earth. I tried Chicago, IL; Chicago, Illinois; New York, NY and Los Angeles, CA. Everytime it told me I didn’t enter a location.
Ahh well…just curious really as I already used the knitting needle method on a globe as described by Bromley when I was a kid (ok…not a knitting needle per se but the idea and result were the same).
I think for friggae’s site to work you might need to put in your Lat and Long and not just a place name. Just a guess since I don’t know my coordinates off hand.