📚 20 Panchang Siddhanthas

Oldest surviving astronomical text. Used in South India. Based on mean motions from Vedic observations. Traditional pandits in AP, Telangana, Tamil Nadu, Karnataka prefer this.

Based on actual astronomical observations. Most widely used in North India. DrikPanchang.com uses this system. Most accurate for North Indian traditions.

Most accurate system — NASA/JPL DE441 dataset. Sub-second precision. HinduPlace default. Recommended for new calculations and diaspora.

Ancient Tamil system using fixed verse cycles. Used in traditional Tamil almanacs. Slightly differs from Drik for some events.

Based on Aryabhata's masterwork. One of the earliest mathematical astronomy systems in India. Historical importance.

Brahmagupta's revision. Introduced significant corrections to planetary calculations.

By Ganesh Daivajnya. Simplified calculations still used in Maharashtra and Gujarat traditional communities.

By Lalla. Corrections to Aryabhata, especially for lunar and solar calculations.

Bhaskaracharya II's masterwork. Still referenced in some Kerala and Maharashtra traditions.

Regional system used in parts of Maharashtra and Goa.

Popular in Varanasi for traditional panchang calculations. Trusted by Kashi pandits.

Regional Tamil system used in some Shaiva traditions.

Used in parts of Karnataka.

From Hubli, Karnataka. Used for Lingayat community calendars.

Based on Sringeri Sharada Peetham calculations. Widely followed in Karnataka Smartha community.

From Udupi Krishna Math. Used by Madhva Vaishnava community.

Kerala's official panchang. Used by Kerala government and all major temples including Guruvayur.

Official calendar of West Bengal. Used for all Bengali Hindu festivals including Durga Puja, Kali Puja.

Odisha's traditional almanac. Used for Jagannath temple rituals and all Odia festivals.

Nepal's official calendar. 56-57 years ahead of Gregorian. Used in Nepal and parts of North India.