Originally Posted By Gershon
Bill,

A minute is a nautical mile at the equator. At 30N, it's about 1/3 of a mile.


Help me out here with the formula for that.

24 hours times 60 minutes is 1440 minutes per day.

1 degree equals 60 nautical miles.

360 degrees times 60 miles equals 21600 (length of equator in nautical miles)

Length divided by minutes per day.

21600/1440 = 15 (miles per minute at the equator)

Do I have than wrong?

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