From: Jim Lux
http://www.wsanford.com/~wsanford/exo/sundials/equation_of_time.html
5 Jan 5.2 minutes
6 Jan 5.7 minutes
30 seconds in a day..
The total variation over the year is +/- 15 minutes, but the derivative
is a lot bigger at some times of the year (now)
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Higher than I expected from a quick look at the graph. I had 17 minutes
total variation in 6 months in my mind!
Mind you, some figure in that table loom doubtful - Oct 01, 07, 13 - unless
they are deliberately (and confusingly) missing out the "-" signs!
Thanks.
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: [email protected]
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