Shodasavarga

Definition

Shodasavarga, 'the group of sixteen,' is the full set of sixteen vargas — divisions of a rasi (sign) — beginning with the birth chart itself, the Rasi. BPHS Ch.6 names all sixteen: Rasi, Hora, Drekkana, Chaturthamsa, Saptamamsa, Navamsa, Dasamsa, Dvadasamsa, Shodasamsa, Vimsamsa, Chaturvimsamsa (Siddhamsa), Saptavimsamsa (Bhamsa), Trimsamsa, Khavedamsa (Chatvarimsamsa), Akshavedamsa and Shashtiamsa. Each one cuts the 30-degree sign into successively finer parts, ruled by signs, planets and presiding deities, so you can weigh a planet's disposition across all sixteen charts rather than the birth chart alone.

In Tradition

Across the classical and modern Jyotish literature, the sixteen vargas are read not just as a list but as a graded set of nested schemes — smaller groupings you can work with. BPHS Ch.6 sorts them into four: Shadvarga (6 divisions), Saptavarga (7), Dasavarga (10) and Shodasavarga (all 16), each with its own Vimsopaka (20-point) strength weighting. Frawley independently draws the same smaller groupings — Shadvarga, Saptavarga and the Dashavarga of ten — from the full sixteen.

In Practice

A jyotishi (Vedic astrologer) uses the Shodasavarga to judge a planet with growing precision: instead of reading the birth chart on its own, you examine the planet's placement across the finer divisional charts, each one refining a different facet of its disposition. Charak presents the sixteen vargas as a way to tell apparently similar charts apart and to examine specific life-areas, which is what makes them essential for accurate, specific prediction. Levacy puts it vividly — the extra divisions are like having fifteen more birth charts to read from, splitting the ecliptic (the band of sky the planets travel) into as many as 150 segments in all. The nested schemes also feed varga-based strength: because BPHS gives each scheme its own Vimsopaka (20-point) weighting, a planet's standing can be added up across whichever group of charts you choose.

Historical Origin

The sixteen-fold division is laid out in the Brihat Parashara Hora Shastra (Ch.6, Sl.2-4 and Sl.42-53), cited here in R. Santhanam's translation, and is attributed to Parashara. Modern works carry it forward, among them Frawley's The Astrology of the Seers, William R. Levacy's Beneath a Vedic Sky, and K.S. Charak's Elements of Vedic Astrology.

Further Reading

• Santhanam, Brihat Parashara Hora Shastra
• Frawley, The Astrology of the Seers
• Levacy, Beneath a Vedic Sky
• Charak, Elements of Vedic Astrology