Researcher Ari Laakso shields his eyes from the midnight sun while approaching the American island of Little Diomede, Alaska, and the Russian island of Big Diomede, as the Finnish icebreaker MSV Nordica sails along the international date line through the Bering Strait, Friday, July 14, 2017. The international date line divides the two islands, putting them currently 20 hours apart despite roughly 2.4 miles (3.8 kilometers) between them. (AP Photo/David Goldman)
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