Lagnaलग्न

The Lagna, or ascendant, is the zodiac sign rising on the eastern horizon at the moment and place of birth. It is the most personal point in a Vedic chart: while the Sun, Moon, and other planets occupy roughly the same sign for everyone born within a day or month, the Lagna shifts through all twelve signs in roughly 24 hours — about one sign every two hours.

The Lagna is therefore the chart element most vulnerable to birth-time error. A 15-minute discrepancy in recorded birth time will rarely move a planet to a different sign, but it can shift the Lagna entirely if birth occurred near a sign boundary. SahiKundli displays a birth-time confidence score alongside every chart for this reason — the Lagna is the first thing that becomes unreliable when confidence drops.

Classical Jyotisha treats the Lagna as the reference point for the native's physical body, temperament, and house structure. Brihat Parashara Hora Shastra opens its chapter on signs by describing each lagna's physical and behavioral signatures; Saravali devotes its entire Chapter 48 to lagna-by-lagna interpretation.

Used on SahiKundli for: identifying the rising sign at the top of the chart, building the Whole Sign house layout, and anchoring every house-based interpretation that follows.