Lagna, the ascendant, is the zodiac sign that was rising on the eastern horizon at the moment of birth. In Jyotish it is the 1st house of the natal chart, and every other house is counted from it. The planet that rules the Lagna sign is called the Lagnesh.
Why the birth time matters
The Earth turns once a day, so all twelve signs rise in turn within 24 hours. On average a sign stays on the horizon for about two hours, but the real windows are uneven and depend on latitude. On the day of the sample chart in Moscow, Pisces rose in 41 minutes and Libra took 181 minutes. The sample birth at 12:00 has Virgo rising at 27°08′; a birth at 12:18 would already have Libra as the Lagna. For this reason the calculator asks for the time to the minute and the place of birth.
How lagna.su calculates it
The date, time and place are converted to universal time, and Swiss Ephemeris returns the degree of the ecliptic on the eastern horizon. The degree is then moved into the sidereal zodiac with the Lahiri ayanamsha, which is about 24° in our era. 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.
Lagna and Lagnesh
The Lagnesh shows where the person spends their energy. In the sample chart the Lagna is Virgo, so the Lagnesh is Mercury. Mercury sits in Cancer in the 11th house, together with the Sun, the Moon and Mars, and an astrologer reads the chart through that house of gains, friends and goals.
Lagna and the Sun sign
The Sun sign depends on the date and changes once a month. The Lagna depends on the time and place and changes every few hours. Western astrology uses the tropical zodiac, and Jyotish uses the sidereal one, so the same Sun can fall into the neighbouring sign. Two people born on the same day in the same city often have different Lagnas.
Lagna in the twelve signs
- Aries: ruler Mars, fire, movable
- Taurus: ruler Venus, earth, fixed
- Gemini: ruler Mercury, air, mutable
- Cancer: ruler Moon, water, movable
- Leo: ruler Sun, fire, fixed
- Virgo: ruler Mercury, earth, mutable
- Libra: ruler Venus, air, movable
- Scorpio: ruler Mars, water, fixed
- Sagittarius: ruler Jupiter, fire, mutable
- Capricorn: ruler Saturn, earth, movable
- Aquarius: ruler Saturn, air, fixed
- Pisces: ruler Jupiter, water, mutable
Special Lagnas
Besides the rising sign, Jyotish uses calculated ascendants for single topics. Arudha Lagna describes the image a person has in the eyes of others. Upapada Lagna is used for marriage. Hora Lagna is read for money and resources, and Navamsha Lagna is the ascendant of the D9 chart.
Questions
How do I find out my Lagna?
Enter the date, the exact time and the city of birth in the calculator on the home page. It returns the sign and degree of the Lagna, the Lagnesh and the positions of the nine grahas. Without a birth time the Lagna cannot be found reliably.
What is Lagnesh?
Lagnesh is the planet that rules the sign of the Lagna, for example Mars for Aries or Jupiter for Pisces. Its house and sign show the main field of a person's life, and its strength matters for the whole chart.
How does Lagna differ from the Sun sign?
The Sun sign is the position of the Sun and changes monthly, while the Lagna is the sign on the eastern horizon and changes every few hours. Jyotish also counts both in the sidereal zodiac, which shifts the signs by about 24° compared with Western charts.