PSN-L Email List Message

Subject: Re: Shadow Zone map
From: John Lahr johnjan@........
Date: Sat, 19 Jan 2008 08:48:41 -0800


At 05:40 AM 1/19/2008, you wrote:
>"I used this site for converting from km to 
>nm: 
>http://www.csgnetwork.com/nsmilekmconverter.html"
>This one is quite good 
>too: 
>http://joshmadison.com/software/convert/
>
>Jerry

It probably makes more sense to use the definition of nautical mile 
to convert directly from degrees to nautical miles.

http://en.wikipedia.org/wiki/Nautical_mile:
A nautical mile "corresponds approximately to one 
minute of 
latitude along any 
meridian. "

Since there are 60 minutes per degree,
104*60 = 6240 nm
140*60 = 8400 nm

Cheers,
John 

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