Indian Chronology (Solar, Lunar and Planetary): A Practical Guide to the Interpretation and Verification of Tithis, Nakshatras, Horoscopes and other Indian Time-records, B.C. 1 to A.D. 2000 c4.s2.5

c4.s2.5

It was thought unnecessary to carry the record of the mean places of planets further back than B.C. 1601, first because it is extremely doubtful whether planetary places were noted in India even roughly before that date, and secondly, because any person wishing to ascertain the mean places of planets at an earlier date can easily do so by noting in the above table the increase of mean sidereal longitude of any planet for 100, 200, 300 . . . . . etc., years, and deducting this increase from the mean place for B.C. 1601.