[amsat-bb] Re: Sun shadow for True North

Franklin Antonio antonio at qualcomm.com
Fri Dec 28 18:23:49 PST 2007

At 04:39 PM 12/28/2007, Tony Langdon wrote:
>You still need to know "when near noon" to within 5 minutes to get
>the required accuracy. :)

Nope.  You just note a few points where the tip of the shadow was at 
various times and draw a line.  Don't need any time info at all.

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