Introduction to Jyotish

Jyotish means 'the science of light'. It is one of the six Vedangas, the auxiliary disciplines that supported the study and ritual use of the Vedas. Its first job was practical: to know when the new and full moons fell, when the Sun turned north, and which nakshatra the Moon occupied, so that rituals could be performed at the right moment. From that astronomical core grew a rich system for describing character and the timing of life events.

Sidereal, not tropical

Western astrology measures positions from the spring equinox (the tropical zodiac). Jyotish measures them against the fixed stars (the sidereal zodiac). Because the equinox slowly drifts against the stars, the two zodiacs are now about 24° apart. The correction is called the ayanamsa; this site uses the Lahiri ayanamsa, the Indian national standard.

The building blocks

A Vedic chart combines four sets of ideas. The nine grahas (Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu) are the actors. The twelve rashis (signs) describe how they act. The twelve bhavas (houses), counted from the rising sign or Lagna, describe where in life the action happens. And the twenty-seven nakshatras add fine detail, especially for the Moon.

Timing

What makes Jyotish distinctive is its timing toolkit. Vimshottari dasha divides life into planetary periods based on the Moon's nakshatra at birth; transits (gochar) show the current movement of the planets over the birth chart; and the annual Varshphal chart highlights the themes of each year.

A tool for reflection

Traditional teachers stress that the chart shows tendencies, not fixed fate. Effort (purushartha), right action and devotion all matter. Use astrology to understand yourself and to choose good timing — and keep medical, legal and financial decisions with qualified professionals.