Five new algorithms for the computation of sun position from 2010 to 2110

Five algorithms for sun position computation, with validity from 2010 to 2110, are proposed and discussed. The algorithms have different accuracy levels, with maximum errors in the solar position spanning from 0.19° to 0.0027°, thus covering a wide range of possible applications. The algorithms are optimized in order to reduce their computational cost as much as possible. The extended time range of validity allows users to employ these algorithms even in long-term projects.

► Five new algorithms for sun position computation are presented. ► The algorithms have a long time validity range (2010–2110). ► The computational cost of the algorithms is kept as low as possible. ► Algorithms have different accuracies: maximum error from 0.19° to 0.0027°. ► Comparisons with algorithms from previous literature are made.