Aryabhata as 1st Indian mathematics and Indian Astronomy-DYK

Aryabhata as the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy.

His Notable works :

Explanation of lunar eclipse and solar eclipse, rotation of Earth on its axis, reflection of light by moon, sinusoidal functions, solution of single variable quadratic equation, value of π correct to 4 decimal places, circumference of Earth to 99.8% accuracy, calculation of the length of sidereal year