Hora Lagna is a special ascendant of Jyotish that is read for wealth, income and material resources. It is a calculated point: it starts from the Sun at sunrise and moves through the zodiac at one sign per hour, twice as fast as the ordinary rising sign on average.
How it is calculated
The method follows Brihat Parashara Hora Shastra. Take the sidereal longitude of the Sun at the local sunrise before the birth and the time elapsed from sunrise to birth. Hora Lagna advances 30° per hour, Bhava Lagna 15° per hour and Ghati Lagna 75° per hour from the same starting point. lagna.su calculates sunrise and the Sun's longitude with Swiss Ephemeris and the Lahiri ayanamsha.
Worked example
The examples below use the lagna.su sample chart: 15 August 1985, 12:00, Moscow. Its Lagna is Virgo 27°08′ by Swiss Ephemeris 2.10.03 with the Lahiri ayanamsha, and the same chart is printed on pages 1–2 of the sample report. Sunrise in Moscow that day was at 06:00 local time, and the Sun stood at Cancer 28°33′. The birth came 5.99 hours later, so Hora Lagna moved 179.8° and reached Capricorn 28°20′. Bhava Lagna moved half as far and stands in Libra 28°26′; Ghati Lagna moved 449.5°, more than a full circle, and stands in Libra 28°02′.
How it is read
The sign of Hora Lagna and its ruler describe the way money comes in. In the sample chart Hora Lagna falls in Capricorn, so Saturn becomes the key planet for income, with its themes of steady work and long effort. Planets in the 2nd and 11th houses counted from Hora Lagna add detail, and the reading is always checked against the natal 2nd and 11th houses.
Limits
Hora Lagna needs an exact birth time: a twelve-minute error moves it by 6°, and near the end of a sign this changes the sign. It describes money matters only and adds to the natal Lagna without replacing it.
Questions
What is Hora Lagna in simple terms?
It is a calculated ascendant used for questions of money. It starts from the Sun at sunrise and moves one sign per hour, so its sign depends on how long after sunrise a person was born.
How to calculate Hora Lagna?
Find the Sun's sidereal longitude at sunrise and the hours from sunrise to birth, then add 30° for each hour. The lagna.su calculator does this from the date, time and place of birth.
Hora Lagna in which sign is best?
No sign is good or bad by itself. The reading depends on the ruler of that sign, its strength and the planets placed with it, so the same Hora Lagna sign can give different results in different charts.