A sign somewhere in the United States says that London, England, is 4386 miles away and that Tokyo, Japan, is 6182 miles away.

Where in the U.S. is the sign?

(Consider the earth to be a perfect sphere of radius 3959 miles, and that London is at 51°30’ North, 0°10’ West and Tokyo is at 35°40’ North, 139°45’ East.)