Distance between Kolkata, India and Billings Metropolitan Area, Montana, USA
12240 km = 7606 miles
We assume a spherical Earth as a close approximation of the true shape of the Earth (an oblate spheroid). The distance is calculated as great-circle or orthodromic distance between city centres on the surface of a sphere.
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Kolkata, India
Country: IndiaKolkata’s coordinates: 22°33′45″ N, 88°21′46″ E
Population: 4,631,392
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Wikipedia article: Kolkata
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Billings Metropolitan Area, USA
Country: USAState: Montana
Billings Metropolitan Area’s coordinates: 45°46′59″ N, 108°30′02″ W
Population: 104,170
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Wikipedia article: Billings Metropolitan Area
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