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sci.solar-declination-equation-of-time Calculator
Calculates solar declination angle and equation of time for a given day of year using the Spencer formula, enabling solar panel tracking calculations. Equation of time ranges from −16 to +14 minutes throughout the year — the analemma figure-8 traces the combined effect of Earth's elliptical orbit and axial tilt.
Inputs
Doy
Reference formula or conversion factor shown for context.