Now, the page 165 of Balachandra Rao's book carries the title: "Saros and Metonic cycle". I hoped prof. Rao would provide some information on the use of saros & Metonic cycle in the Indian astronomical/astrological practice. A disappointment: there is nothing there apart from some general info, such as could have been culled from any simple handbook on the history of astronomy. 

Was the concept of saros known to ancient Indian astronomers?

Best, 

Artur Karp