Enter the date, time and place of birth above and this free gand mool calculator tells you whether the birth is gand mool, the nakshatra and pada the Moon was in, and how many hours and minutes the birth fell from the junction of two nakshatras. It sets the narrower readings that teachers use side by side, and gives the dates and times when the Moon returns to the birth nakshatra, the day many families choose for the gand mool shanti: its first return after the birth and, for an older birth, its next stay from today. If you do not know the time of birth, it shows the Moon’s nakshatras through the whole birth date.
How it works
Six nakshatras are called gand mool: Ashwini, Ashlesha, Magha, Jyeshtha, Moola and Revati. They sit in pairs at the three places where a water sign hands over to a fire sign: Ashlesha to Magha (Cancer to Leo), Jyeshtha to Moola (Scorpio to Sagittarius) and Revati to Ashwini (Pisces to Aries). The three that end a water sign are ruled by Mercury and the three that begin a fire sign by Ketu.
The calculator finds the Moon’s sidereal position at birth (Lahiri ayanamsa, from the NASA JPL DE440 tables) and its nakshatra and pada. If the nakshatra is one of the six, it works out the exact moments the Moon entered and left that nakshatra, so it can say how far from the junction the birth fell, in clock time and in ghatikas. A ghatika is 24 minutes, sixty to a day (B. V. Raman’s glossary to Prasna Marga). The yes or no at the top is the same rule the dosha panel of the free kundali uses, so the two always agree.
Reading the result
The first line answers the common question: was the Moon in one of the six? Below it, a table gives the moment the Moon entered the nakshatra, the birth, the moment it left, the time from the junction and the pada. A second table sets out the readings from the widest to the narrowest, each with its source, and shows which of them hold for this birth.
The last part gives the Moon’s first return to the birth nakshatra after the birth and, once that has passed, its stay now or its next one from today, in the time zone of the birth place. Brihat Parashara Hora Shastra (ch. 93, verses 3 and 4, in R. Santhanam’s edition), speaking of the Moola shanti, gives three choices for the rite: after the 12th day from birth, on the next day of the birth nakshatra, or on another auspicious day. Many families hold a gand mool shanti when the birth nakshatra returns, as tradition. The family priest chooses the day and the form.
Where traditions differ
Teachers do not agree on how much of each nakshatra counts, and this page shows each reading rather than choose one:
- The whole nakshatra. The usual definition counts any birth with the Moon in one of the six. Our free kundali uses it, and so does the answer at the top.
- The pada at the junction. B. V. Raman’s notes to Prasna Marga (ch. 2, verses 16 to 20) give gandanta as the first pada of Ashwini, Magha and Moola and the last pada of Ashlesha, Jyeshtha and Revati.
- Two ghatikas each side. Brihat Parashara Hora Shastra (ch. 92, verse 3) names only the last two ghatikas of Revati, Ashlesha and Jyeshtha and the first two of Ashwini, Magha and Moola as nakshatra gandanta.
- Abhukta Moola. The same chapter (verse 5) names the end of Jyeshtha and the start of Moola as Abhukta Moola. In R. Santhanam’s English it is the last 6 ghatikas of Jyeshtha and the first 8 of Moola, but the Sanskrit verse printed beside it in the same edition reads five and eight (pancha-ashta ghatikah). For Moola the two agree; for Jyeshtha the calculator tests both 6 and 5.
The calculator reads each ghatika as 24 minutes of clock time. Chapter 92 also describes a gandanta of the tithi and one of the rising sign; this page tests only the nakshatra.
What it does not do
It makes no prediction. Some older texts list effects of a gand mool birth on the child or the family, pada by pada; this page does not repeat them, because a single factor never decides anything in a chart. It offers no remedy and sells none. The shanti, if a family keeps it, is a matter of custom and faith, guided by the family priest. Nothing here is a reason for worry.
Frequently asked questions
↳ What is gand mool?
Gand mool is the name for a birth with the Moon in one of six nakshatras: Ashwini, Ashlesha, Magha, Jyeshtha, Moola and Revati. They sit at the three junctions where a water sign hands over to a fire sign, which the tradition treats as sensitive points, called gandanta.
↳ How do I check if my baby was born in gand mool?
Enter the date, time and place of birth above. The calculator finds the Moon's nakshatra and pada at that moment, says whether it is one of the six, and measures how close the birth fell to the junction. The answer matches the dosha panel of the free kundali.
↳ Is every birth in these six nakshatras gand mool?
By the usual definition, yes. Narrower readings count only the pada at the junction, or only two ghatikas on each side of it (Brihat Parashara Hora Shastra, ch. 92, verse 3). The result shows which of these readings hold for the birth, so you can follow the one your family uses.
↳ When is the gand mool shanti done?
Brihat Parashara Hora Shastra (ch. 93, verses 3 and 4) gives three choices for the Moola shanti: after the 12th day from birth, on the next day of the birth nakshatra, or on another auspicious day. Many families hold it when the birth nakshatra returns. The calculator gives the dates and times of the first return after the birth and, once that has passed, of the next one from today. The family priest decides the day.
↳ What is Abhukta Moola?
Brihat Parashara Hora Shastra (ch. 92, verse 5) names the end of Jyeshtha and the start of Moola as Abhukta Moola, the narrowest and most discussed part of the Jyeshtha to Moola junction. R. Santhanam's English gives the last 6 ghatikas of Jyeshtha and the first 8 of Moola; the Sanskrit printed beside it reads five and eight. When the Moon is in Moola the calculator tests the first 8 ghatikas, and when it is in Jyeshtha it tests both the last 6 and the last 5, at 24 minutes a ghatika.
↳ What if I do not know the time of birth?
Tick the box and the calculator shows every nakshatra the Moon was in during the birth date, with the time of each change. If all of them are gand mool, or none is, the answer does not depend on the time. If the Moon changed nakshatra that day, the time decides it.
↳ Does a gand mool birth mean something bad will happen?
No. It is one factor in a chart, and a chart is read as a whole. Many families mark it with a simple shanti as a matter of custom, and many do not. This page makes no prediction about the child or the family.