Damn … you can see Russia from there.

You remember back in 2008, when that stupid bitch, Tina Fey, mocked Sarah Palin about her comment that, ‘you can see Russia from here,’ well Sarah wasn’t lying.

At their closest points, mainland Russia and mainland Alaska are only 53 miles apart.

Tomorrow Island (Russia) and Yesterday Isle (USA) are just three miles apart but there's a 21-hour time difference between them. This is because they sit on either side of the International Date Line which passes through the Pacific Ocean and marks the boundary between one calendar day and the next.
During winter, an ice bridge usually spans the distance between these two islands. At these times, it is theoretically possible (although not legal, since travel between the two islands is forbidden) to walk between the United States and Russia.

The Diomede Islands, also known as Tomorrow Island and Yesterday Isle, are two small islands located in the middle of the Bering Strait, between Russia and the United States. The islands are about 2.4 miles (4 kilometers) apart and are divided by the International Date Line. The westernmost of these islands, Big Diomede, is part of Russia and is known locally as Ratmanov Island. The easternmost, Little Diomede, is part of the United States and is known locally as Krusenstern Island.

Over the years, the position of the International Date Line has changed several times.
Alaska, originally claimed by Russia, was to the west of the International Date Line because most travelers arrived there by way of Siberia. When the United States bought Alaska in 1867 the line was moved to the west of it and located between the two islands.