Birth details
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A janam kundli (birth chart) is a map of the sky at the moment of birth: which rashi was rising on the eastern horizon of the birthplace (the lagna), and which rashi, and which house counted from the lagna, the Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu were in. This page draws the lagna (D1) and navamsha (D9) charts from the date, time and city of birth, in North or South Indian style, with each graha’s degree, nakshatra pada, house and retrograde motion. The calculation runs in this browser; it gives no predictions.
Reading the North and South Indian charts
The grahas’ positions are the same in both styles; only the boxes are drawn differently. In the North Indian chart the houses keep their places: the first house is the diamond at the top centre and the others follow it anticlockwise; the small number in each box is the rashi that falls there (1 Mesha … 12 Meena). In the South Indian chart the rashis keep their places, as in the picture below; in the result the lagna’s box is shaded and has a diagonal line in its corner, and the houses are counted clockwise from that box.
In the result the grahas are written short: Su Sun, Mo Moon, Ma Mars, Me Mercury, Ju Jupiter, Ve Venus, Sa Saturn, Ra Rahu, Ke Ketu; (R) means retrograde. The lagna is written “Asc” in saffron.
How it is worked out
The sidereal (Lahiri) positions of the nine grahas at the moment of birth are worked out: the Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn with astronomy-engine, Rahu as the mean lunar node (Meeus’s formula) and Ketu opposite it. A graha whose sidereal longitude is decreasing at that moment is marked retrograde. The lagna comes from the city’s latitude and longitude and the local sidereal time at that moment. Houses are whole rashis: the lagna rashi is the first house, the next rashi the second, and so on. The navamsha follows the Parashari rule given in the questions below.
The nine grahas were checked against Drik Panchang’s sidereal positions for five births from 1950 to 2075 (New Delhi, Kolkata, Mumbai): every graha was within 35″, so every rashi, nakshatra pada, house and retrograde motion agreed. The lagna has a fixed difference: on seven samples Drik Panchang’s lagna came out 11 to 18′ further on than ours, the same as about 50 seconds of birth time. We keep the lagna of the astronomical rule, which also agrees with a direct search for the point rising on the eastern horizon. For a birth within 5 minutes of a change of lagna, or 2 minutes of a change of the navamsha lagna, the result gives a warning. The navamsha has not been checked against Drik Panchang separately.
The full panchang of the time of birth (tithi, vaar, yoga, karana, tithi birthday): Birth panchang · The full method: How we calculate the panchang
Birth chart: questions and answers
What is the lagna kundli?
The lagna kundli (D1, also called the birth chart or rashi chart) is a map of the sky at the moment of birth. The rashi rising on the eastern horizon of the birthplace at that moment is the lagna; it becomes the first house, the next rashi the second, and so on round the twelve. Each graha is written in the house of the rashi it was in at that moment. As the Earth turns, the lagna changes about every two hours, so it needs both the exact time and the place of birth.
What is the navamsha (D9) chart?
Each rashi divided into nine equal parts of 3°20′ gives the navamshas, 108 in all. In the navamsha chart each graha is written in the rashi of the navamsha it is in. In the Parashari tradition the count starts from the rashi itself for the movable rashis (Mesha, Karka, Tula, Makara), from the ninth for the fixed ones (Vrishabha, Simha, Vrishchika, Kumbha) and from the fifth for the dual ones (Mithuna, Kanya, Dhanu, Meena). The navamsha lagna changes about every 13 minutes, so it depends even more on the time of birth.
How do the North Indian and South Indian charts differ?
The positions of the grahas are the same in both; only the drawing differs. In the North Indian chart the houses keep their places: the first house is the diamond at the top centre, the others follow it anticlockwise, and the number in each box is the rashi that falls there. In the South Indian chart the rashis keep their places: Meena, Mesha, Vrishabha, Mithuna along the top from the left, then the rest clockwise; the lagna’s box is marked with a diagonal line or the word “Lagna”, and the houses are counted clockwise from it. Switch between them with the “North Indian / South Indian” buttons in the result.
Why might this chart differ from another program or panchang?
The grahas’ positions agree with Drik Panchang within 1′. Differences usually come from four things: the ayanamsha (we use Lahiri; some programs use Raman or Krishnamurti), mean or true Rahu and Ketu (we use mean, as Drik does), the house system (here houses are whole rashis; in another system such as bhava chalit a graha can show in the next house), and the lagna: Drik Panchang’s lagna comes out about 11 to 18′ further on than ours, the same as about 50 seconds of birth time. So for a birth within a minute or two of a change of lagna the lagna rashi can differ; the result then gives a warning.
What if the time of birth is not known?
Then there is no lagna chart: the lagna changes about every two hours and the navamsha lagna about every 13 minutes. With “time not known” this page gives the grahas’ positions at 12 noon (rashi, degree, nakshatra pada) without houses, and says which graha changed rashi during that day. The Moon crosses about one nakshatra a day, so its nakshatra pada (and the name letter) can change during the day.
Is it free? Where does my information go?
Yes, it is free and needs no account. The whole calculation runs in this browser: the date, time and city of birth are neither sent anywhere nor stored. Only the chart style you choose (North or South Indian) is remembered in this browser. To keep the chart, use “Save as PDF / print”.
Does it give predictions, doshas or dashas?
No. This page gives only the calculation: the lagna and the positions of the grahas at the moment of birth, worked out astronomically. It has no predictions, no Manglik or other doshas, no dashas and no remedies. For a reading of the chart, show this PDF to your own purohit or astrologer.
Sources
- Drik Panchang, Planetary Positions (Sidereal): the nine grahas, retrograde motion and lagna checked for New Delhi 15 August 1990 and 1 January 1950, Kolkata 26 January 2000, Mumbai 2 October 2026 and 20 March 2075
- Drik Panchang, daily panchang: tithi, nakshatra pada and Moon rashi checked for New Delhi 15 August 1990, Kolkata 26 January 2000 and Mumbai 2 October 2026
- Jean Meeus, Astronomical Algorithms (2nd ed.), chapter 47: the mean node of the Moon (Rahu)
- Wikipedia, Kundali (astrology): the layout of the North and South Indian charts, and the lagna’s mark in the South Indian chart (a diagonal line or “Lagna”)
- IANA time zone database (Asia/Kolkata): the “war time” of 1941–1945; Wikipedia, Indian Standard Time: Bombay Time (until 1955) and Calcutta Time (until 1948)
- Name syllables: Brihad Avakahada Chakram, Nakshatra Prakarana, Shatapada Chakra verses 9–15 (archive.org); Pt. Sitarama Sharma, Ati Brihat Avakahada Chakram (1932), pp. 22–24
- SanatanBodh panchang calculation (astronomy-engine, Lahiri ayanamsha); method: sanatanbodh.in/en/panchang/ganana-vidhi/
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