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zon [2019/03/06 14:11]
zon [2019/03/07 16:55] (current)
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 +====== Sun ======
  
 +  Streefkerk:   lat=51.90, lon=4.75
 +  Winter = UTC+1, Zomer=UTC+2
 +
 +{{::solarcalcs.pdf |Formules}}
 +===== Sun declination =====
 +
 +  sin δ = 0.39795 ⋅ cos [ 0.98563 ⋅ ( N – 173 ) ]
 +  δ: declination [rad]
 +  N: days since 1 jan
 +  accuracy: +/- 1 deg
 +  
 +===== Elevation =====
 +[[http://solardat.uoregon.edu/SunChartProgram.html|graph]]