Tirugaṇita-pañcāṅgam

Tirugaṇita-pañcāṅgam, also known as Dṛggaṇita pañcāṅgam, is an almanac popular among Tamil speaking people in India and the world over.

Chinthamani Ragoonatha Chary was a member of a family of almanac makers and as such he was completely familiar with the traditional computational techniques employed by native astronomers.

[1] During his association with the Observatory, he became aware of the acute inaccuracies in the almanacs that were being used by the native people of southern India.

His new Pañcāṅgam was severely criticized by the traditionalists on the ground that it was against the wisdom and teachings of ancient sages and seers.

Later Ragoonatha Chary and his friends succeeded in organizing a meeting at Sankara Mutt at Kumbakonam (now at Kanchipuram).