Thirukanitha (drik ganita) means the chart is computed from actual astronomical positions of the planets — modern ephemeris data — rather than the approximations used in older almanac methods. The result is planetary positions that match what a telescope would actually observe.

Vedic (sidereal) astrology measures positions against the fixed stars, while Western (tropical) astrology measures against the seasons. The Ayanamsa is the offset between the two — currently about 24 degrees — and Lahiri (Chitra Paksha) is the official standard used by the Indian government's calendar committee and most Vedic astrologers.

The ascendant (Lagna) — the sign rising on the eastern horizon — changes roughly every two hours, and the entire house structure of the chart hangs off it. An error of even 15–30 minutes can shift your ascendant and meaningfully change the chart, which is why precise birth time matters more than anything else you enter.

Your Rasi is the sign the Moon occupied at your birth — that's what Vedic astrology primarily uses. The "star sign" from newspaper horoscopes is your tropical Sun sign. Because of the ayanamsa offset and the Moon vs Sun difference, the two are usually different signs.

Your birth date, time, and location are sent to our server to compute the chart (with planetary data from the Prokerala astrology API when available), but we don't store them, tie them to your identity, or build any profile from them.