Nakshatra: what it is and how to find your birth star

What is a nakshatra?

Nakshatra is often translated as lunar mansion. The Moon takes about 27 days to travel once around the zodiac, so the sky was divided into 27 stops, one for each night of its journey. Each stop is a nakshatra, and each has its own name and traditional symbolism.

The zodiac circle is 360 degrees. Divide it by 27 and each nakshatra spans 13 degrees 20 minutes. Ashwini starts at 0 degrees Aries, and the rest follow in order around the circle. Because a sign is 30 degrees, a nakshatra rarely lines up with a sign: some nakshatras sit inside one sign, and others straddle two.

Janma nakshatra: your birth star

Your janma nakshatra is simply the nakshatra the Moon occupied at the moment of your birth. Janma means birth. It is also called your birth star, and in many Indian families it is the star used for the naming ceremony, for matching charts in marriage and for choosing a first syllable for a name.

It is a separate fact from your Moon sign. The Moon sign tells you which of the 12 signs the Moon was in, and the nakshatra tells you where within that sign, in finer detail. See the comparison below, or our guide to finding your Moon sign.

The 4 padas of a nakshatra

Each nakshatra is split into four equal quarters called padas, or charanas. A pada is 3 degrees 20 minutes wide. Four padas times 27 nakshatras gives 108 padas in total, and nine padas make exactly one sign.

Pada matters because it narrows your birth star further. Two people with the same nakshatra can have the Moon in different padas, and so in different signs when the nakshatra straddles a sign boundary. Traditions that assign a first syllable for a baby's name use the pada for that reason.

Why your birth time matters

The Moon is the fastest-moving body in the chart. It covers roughly 13 degrees a day, which is about one full nakshatra. So the nakshatra can change within a single day, and the pada can change in around six hours, since a pada is a quarter of that.

If your birth time is off by a few hours, your pada may be wrong. If it is off by half a day or more, or you were born near a nakshatra boundary, the nakshatra itself may be wrong. A correct date, time and place of birth are needed for a reliable result. The nakshatra is also found using the sidereal zodiac with the Lahiri ayanamsa, not the Western tropical zodiac, so a Western chart will not give the same answer.

All 27 nakshatras with lords and zodiac spans

The ruling planets run in the same fixed order as the Vimshottari dasha: Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury. That nine-planet sequence repeats three times across the 27 nakshatras. Spans use the sidereal zodiac, so they will not match Western tropical degrees.

How the nakshatra lord sets your first Mahadasha

The ruling planet of your birth nakshatra is the planet of your first Mahadasha. Born with the Moon in Rohini, the lord is the Moon, so life begins in a Moon period. Born in Pushya, it begins in Saturn. How far the Moon had travelled through the nakshatra decides how much of that first period was already used up at birth.

From there the other planets follow in the fixed order. Our Mahadasha guide explains the 120-year cycle, the length of each period and the sub-periods inside them.

Nakshatra versus Moon sign

A Moon sign (rashi) is one of 12 divisions of 30 degrees. A nakshatra is one of 27 divisions of 13 degrees 20 minutes. The nakshatra is the finer measure, so each sign holds two and a quarter nakshatras.

Take the Moon at 15 degrees Aries. The Moon sign is Aries. The nakshatra is Bharani, since Bharani runs from 13°20′ to 26°40′ Aries. The two answers describe the same Moon position at different resolutions. The tradition uses the sign for broad temperament and the nakshatra for finer detail and for timing through the dasha. Read more in Moon sign (rashi) explained.

How to find your nakshatra

By hand, you need the Moon's exact sidereal longitude at your birth moment, then divide by 13 degrees 20 minutes. That needs an ephemeris and the ayanamsa correction, which is easy to get wrong, so most people use a calculator. MoonMapped's free reading calculates your chart from your birth date, time and place and shows your Moon's nakshatra.