History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c38.s3.16

v1.c38.s3.16

Bhāskara II (1150 A.D.) notes, 1 day (24 hours) = 30 kṣaṇas; 1 kṣaṇa = 2 ghaṭikās (48 minutes); 1 ghaṭikā = 30 kalās (24 minutes); 1 kalā = 30 kāṣṭhās (48 seconds); 1 kāṣṭhā = 18 nimeṣas, 1 nimesa = 30 tatparas, 1 tatpara = 100 truṭis, 1 truṭi (lotus pricking time) = 1/33,750 of a second. Bhāskara II while computing the instantaneous motion of planets compared its successive positions and considered its motion as constant during the interval which cannot be greater than a truṭi of time, though it may be infinitely less.