Semisopochnai Island (North), Alaska

53,178	53,179	53,-179
Segula Island	Semisopochnai Island (North)	Bering Sea
Amchitka Island (West)	Amchitka Island (East)	Amatignak Island
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This graticule is located at 52,179. Today's location

The eastern border of this graticule is the Antimeridian.