It does this using the mean rate of annual precession (0.01396887831940 degrees per year). iPhemeris adjusts those to the date of the Chart or Table being used. Values shown are for the Epoch starting Jan.
Note: The degree offset from Tropical positions for pre-defined Ayanamsa are listed at the end of this documentation. In Sidereal mode all positions for all features throughout the App are adjusted accordingly.iPhemeris will interpolate the correct value for other dates. Enter your custom value in the box below.
Before contacting support, please make a thorough review of the documentation.