Lost at Sea: The Search for Longitude

"It must be...

C.) ...Tashkent, Uzbekistan!" (longitude: about 70 degrees east)
Tashkent is indeed four hours and forty minutes removed from Greenwich - but can you say "land-locked?" Reverse course and give it another try.

"So, surely it's...

A.) Havana!" (longitude: about 82 degrees west of Greenwich)
B.) Chicago!" (longitude: about 88 degrees west)
C.) Tashkent, Uzebekistan!" (longitude: about 70 degrees east)
D.) Cape Cod!" (longitude: about 70 degrees west)