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.s2.13

c4.s2.13

The Summer Solstice happens when the sun is at 90° Tropical Longitude. Table XVII-A. gives the Sun's sidereal longitude for every complete day of the Solar year, while the table in Sec. 284, p. (103) of the text gives us the difference between Indian sidereal and true tropical longitude for various epochs A.D. which we can apply, with sign reversed, to epochs B.C. Our epoch B.C. 483 preceded A.D. 520 by just 1003 years.