Imagine that you have been captured by a UFO, and after some time deposited back to earth. You open your eyes and see the sun straight above you, a palm tree, and a big stone sphinx in the sand. How do you know whether you are in Las Vegas or in Egypt?
March 14th, 2012 | Category: 
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If the sun is straight above you and it happens to be the longest day in the northern hemisphere. Then you are under the tropic of Cancer, so you must be in Egypt.
Correct Thumper.
You are in Egypt. On the globe, US is north from the Tropic of Cancer line. Tropic of Cancer is the north most line where sun could be straight overhead. So, sun can’t be straight above you in Vegas. Tropic of Cancer crosses Egypt. So sun could be straight above you during a certain part of the year in Egypt.
The sphinx picture posted in the puzzle is actually from Egypt.
You’re today’s winner.