Nine Grahas, Twelve Signs, Twenty-Seven Nakshatras

The nine grahas are the actors: Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu, and Ketu, with mahadashas of 6, 10, 7, 17, 16, 20, 19, 18, and 7 years. The twelve signs are the stages, each 30 degrees, owned by the seven weekday grahas, with Rahu and Ketu as guests rather than sign lords. The twenty-seven nakshatras are the Moon's daily steps, 13 degrees and 20 minutes each. A planet in Makara is in Saturn's sign. The same planet in the 10th is in a house of career only if the lagna makes Makara the 10th, which happens for Mesha lagna. Change the lagna and the sign stays while the house moves. That is the whole difference between a rashifal and a kundli.

A marriage needs the 7th house, which is a sign counted from the lagna, the 7th lord, who is a graha, and Venus, another graha, confirmed in D9. The timing needs the nakshatra of the Moon, because that star's lord opened the dasha sequence, and the antardasha of the 7th lord, which is arithmetic inside 120 years. A career needs the 10th in the same three-layer way. A mind needs the Moon's sign and the Moon's nakshatra, which may have different lords: a Moon in Swati is in Tula, Venus's sign, and in Rahu's nakshatra. People who ask which of the three matters most are asking to throw away a layer. The event uses all three.

Jyothish SI places the nine, the twelve, and the twenty-seven with Lahiri ayanamsa and Swiss Ephemeris, after the city's zone offset is applied. A tropical Sun sign from a newspaper will not land on the same nakshatra boundary. A free account can generate the kundli so you can see your lagna, your Moon's star, and the lord now running. The role of the system is modest and exact: grahas act, signs qualify them, houses assign the topic, nakshatras time the topic. Anything that uses only one of the four is a partial life.