getRefraction method

double getRefraction ()

Method to get the refraction value to be used when calculating sunrise and sunset. The default value is 34 arc minutes. The Errata and Notes for Calendrical Calculations: The Millennium Edition by Edward M. Reingold and Nachum Dershowitz lists the actual average refraction value as 34.478885263888294 or approximately 34' 29". The refraction value as well as the solarRadius and elevation adjustment are added to the zenith used to calculate sunrise and sunset.

@return The refraction in arc minutes.


double getRefraction() {
  return this._refraction;