The Chronology of India, from the Earliest Times to the Beginning of the Sixteenth Century c5.148
The Chronology of India, from the Earliest Times to the Beginning of the Sixteenth Century c5.148
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c5.148
499 Friday, March 19th. Vernal equinox, Ś. 421, about two and a half hours after sunrise at Ujjain; epoch of Āryabhaṭa and other Hindu astronomers from which the Kaliyuga is dated back 3600 sidereal years. The ecliptic was fixed by its position with reference to the sidereal signs at this equinox; and as Hindu astronomers allow a uniform precession of 54″ of arc annually, the sidereal year begins later by 1 day every 66·7 years, or 21 days in 1400 years, and commences now about 12th April.