Demo One How to measure Latitude & Longitude



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All About Latitude & Longitude



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The Earth is not a sphere. It is an oblate spheroid .

The Earth is 134.397 kilometers (83.51 miles) farther

around at the Equator than at the Poles.



ALL VALUES ARE ROUNDED TO THE NEAREST .01



AT THE EQUATOR

One degree of latitude = 110.57 km or 68.71 mi

One minute of latitude = 1.84 km or 1.15 mi

One second of latitude = 30.72 m or 100.77 ft

One degree of longitude = 111.32 km or 69.17 mi

One minute of longitude = 1.86 km or 1.15 mi

One second of longitude = 30.92 m or 101.45 ft



AT LATITUDE 40 DEGREES (NORTH OR SOUTH)

One degree of latitude = 111.03 km or 68.99 mi

One minute of latitude = 1.85 km or 1.15 mi.

One degree of longitude = 85.39 km or 53.06 mi

One minute of longitude = 1.42 km or .88 mi

One second of longitude = 23.72 m or 77.82 ft



AT LATITUDE 80 DEGREES (NORTH OR SOUTH)

One degree of latitude = 111.66 km or 69.38 mi

One minute of latitude = 1.86 km or 1.16 mi

One second of latitude = 31.02 m or 101.76 ft

One degree of longitude = 19.39 km or 12.05 mi

One minute of longitude = .32 km or .20 mi

One second of longitude = 5.39 m or 17.67 ft



AT THE POLES

One degree of latitude = 111.69 km or 69.40 mi

One minute of latitude = 1.86 km or 1.16 mi

One second of latitude = 31.03 m or 101.79 ft



Diagram is exaggerated

( red line is a circle.)



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Anywhere south of the equator is expressed as a negative latitude .

Anywhere west of the prime meridian is expressed as a negative longitude.

