29 Dec
2007
29 Dec
'07
2:23 a.m.
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.