Dear Colleagues,

Is there any evidence for the use of the fraction 63/64  – to determine the length of the lunar day (tithi)? In ancient Babylonian-Greek astronomy? In ancient Indian astronomy?

The result of the division, if multiplied by 30, would give the length of the synodic month  – as 29. 53125d.

Your help in the matter would be greatly appreciated,

Artur Karp

University of Warsaw, South Asian Studies Dept., Emeritus