Spiritual · Vedic Astrology
Nakshatra Calculator
In Vedic astrology, the Moon's position at your birth determines your Nakshatra: the lunar mansion that reveals your emotional nature, your soul's orientation, and the qualities that make you distinctly yourself. Enter your date of birth to discover yours.
The Moon moves about 13° per day, so birth time can change your nakshatra. Enter the time exactly as it appeared on the local clock at your birth location.
We use this to apply the correct timezone (including historical DST) so the Moon's position is anchored to your birth instant, not your current location.
This calculator uses the sidereal (Lahiri) Moon longitude on your birth instant. For the most precise result, a complete Vedic birth chart calculated by an experienced astrologer using your exact birth coordinates is recommended.
The 27 Nakshatras grouped by their Vimshottari ruling planet
5 min read·Vedic Astrology
What is a Nakshatra?
A Nakshatra is one of the 27 lunar mansions that Vedic astrology uses to divide the sky. Each mansion spans exactly 13 degrees and 20 minutes of the zodiac, and together the 27 of them fill the full 360-degree circle in equal slices. The Moon travels through all 27 in roughly 27.3 days, the length of one sidereal month, which means it moves from one Nakshatra into the next a little less than once a day. Your birth Nakshatra is the mansion the Moon occupied at the exact moment you were born.
Jyotish gives the Moon this weight because the Moon governs the mind, the emotions, and the instinctive responses that run beneath conscious thought. Where the Sun shows the will and outward purpose, the Moon shows the texture of the inner life, and for that reason traditional astrologers often treat the birth Nakshatra as more personally telling than the Sun sign.
The calculation is sidereal rather than tropical. Western astrology measures from the moving spring equinox, while Jyotish measures against the fixed stars. The slow drift between the two, caused by the precession of the equinoxes, is corrected with the Lahiri ayanamsa, currently a little under 24 degrees. Each Nakshatra is also split into four Padas, or quarters, of 3 degrees and 20 minutes each. The Padas tie the Nakshatra to the four aims of life and refine how it expresses, so two people in the same Nakshatra but different Padas will not read the same way.
How the calculation works
- The Moon's tropical longitude is read from ephemeris data for the exact birth date, time, and location.
- The Lahiri ayanamsa value for that date is subtracted, converting the tropical longitude into a sidereal one.
- The sidereal longitude is divided by 13.333 degrees (360 divided by 27) to find the Nakshatra number, from 0 to 26.
- The remainder inside that Nakshatra is divided by 3.333 degrees to find the Pada, from 1 to 4.
Example: birth on June 15, 1990, at 10:30 AM in Mumbai, India.
- Tropical Moon longitude: approximately 78.4 degrees
- Lahiri ayanamsa for 1990: approximately 23.6 degrees
- Sidereal Moon longitude: 78.4 - 23.6 = 54.8 degrees
- Nakshatra: 54.8 / 13.333 = 4.11, so Nakshatra 4, which is Rohini
- Pada: 0.11 x 13.333 = 1.47 degrees into Rohini, which is Pada 1
How to interpret your Nakshatra
In Western astrology the Sun sign is the headline because it tracks the Sun, the symbol of identity. Jyotish does not ignore the Sun, but it reads the Moon first. The Moon moves quickly and changes Nakshatra almost every day, so its position is far more specific to you than a Sun sign shared by everyone born across a four-week stretch. This is why the birth Nakshatra is treated as the most personal layer of the chart: it describes how you feel and react, not only what you aim for.
The ruling planet of your Nakshatra colours its energy. It points to your core motivations and the instinctive way you respond before deliberation takes over. A Nakshatra ruled by Mars carries drive and urgency; one ruled by Mercury works through analysis and language. Reading the planet alongside the Nakshatra's deity and symbol gives you the fuller picture.
The Pada narrows this further. Each of the four Padas corresponds to one of the four aims of life: Dharma or purpose, Artha or resources, Kama or desire, and Moksha or liberation. The Pada you were born in tilts the Nakshatra toward one of these themes and explains why people who share a Nakshatra can still feel quite different.
Finally, your birth Nakshatra anchors your Dasha timeline. In the Vimshottari system the ruling planet of the birth Nakshatra becomes your first Mahadasha lord, and the Moon's exact position within the Nakshatra sets how many years of that opening period remained when you were born.
Frequently asked questions
How accurate is the Nakshatra calculation?
Accuracy depends mostly on the precision of your birth time. The Moon moves about 0.5 degrees per hour, which is enough to shift the Pada and, for a birth close to a boundary, occasionally the Nakshatra itself. A birth time known to within about 30 minutes gives a reliable result for almost every chart.
What if I don't know my exact birth time?
Birth time matters here because the Moon changes Nakshatra roughly every 54 hours, and the Pada changes about four times as often. If you do not know your time, enter noon as a reasonable default. If the result does not feel right, read the Nakshatra on either side of it as well, since a boundary birth can land in the neighbour.
What is the difference between a Nakshatra and a Rashi?
A Rashi, or Moon sign, divides the zodiac into 12 signs of 30 degrees each. A Nakshatra divides the same circle into 27 lunar mansions of 13 degrees and 20 minutes each, so each Rashi contains 2.25 Nakshatras. The Nakshatra is the finer and more personal of the two in Jyotish, and most traditional readings begin from it.
Why does Karmaculator use the Lahiri ayanamsa?
The Lahiri ayanamsa, also called the Chitrapaksha ayanamsa, is the value adopted by the Indian government for the national calendar. It is the most widely used ayanamsa in traditional Jyotish, which keeps Karmaculator's results consistent with mainstream Vedic practice.
How does my Nakshatra relate to my Dasha period?
Your birth Nakshatra sets the starting point of the Vimshottari Dasha sequence. Its ruling planet becomes your first Mahadasha lord, and the Moon's exact position inside the Nakshatra determines how many years of that first period were already complete at birth, which is why two people in the same Nakshatra can begin life in different Dasha balances.
Your Nakshatra is one piece of your complete Vedic picture. The Dasha Calculator shows the planetary periods activated by your birth Nakshatra. The Lagna Calculator reveals your rising sign, which works alongside your Nakshatra to shape your outward personality. And if you want to understand your Moon’s sign in the Western-Vedic bridge, the Moon Sign Calculator shows your Rashi.
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27 Nakshatras - A Complete Lunar Zodiac
The 27 nakshatras divide the 360-degree sky into equal segments of 13°20' each - corresponding to the approximately 27-day cycle of the Moon's orbit around the Earth. Each nakshatra is associated with a specific star or star cluster, a presiding deity, a ruling planet, and a distinct quality of experience. Together, the 27 nakshatras form one of the most detailed maps of human nature available in any astrological tradition.
This calculator uses a simplified version of the lunar longitude calculation, accurate for most birth dates between 1900 and 2100. For the most precise Nakshatra determination - particularly when the Moon is near the boundary between two nakshatras - a complete Vedic birth chart calculation using your exact time and location of birth is recommended.