The conjunction of 3102 B.C. / by B.L. van der Waerden.
Abstract:
"I feel we should consider the possibility, or even the probability, that the transmission of the whole astronomical system, which formed the basis of the Persian tables and of the Hindu epicycle astronomy, followed the same path as the transmission of this one fundamental constant [the length of the sidereal year], namely, from Alexandria to Babylon, from Babylon to Sassanid Persia ... and finally to India."