Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c12.s2.t7.9

v2.c12.s2.t7.9

The Pañcasiddhāntikā mentions other things from the Puliśa Siddhānta which include the question of true places of the sun and the moon. It describes the method of finding ‘carakhaṇḍas’ (groups of ascensional differences) from the ‘palabhā’ (the noon shadow on equinoctial day), and calculating therefrom the length of the day; terrestrial longitudes too have been considered.