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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.

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The 27 Nakshatras grouped by their Vimshottari ruling planet

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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

  1. The Moon's tropical longitude is read from ephemeris data for the exact birth date, time, and location.
  2. The Lahiri ayanamsa value for that date is subtracted, converting the tropical longitude into a sidereal one.
  3. The sidereal longitude is divided by 13.333 degrees (360 divided by 27) to find the Nakshatra number, from 0 to 26.
  4. 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.

Your janma nakshatra -- birth star -- is determined by the position of the Moon at the exact moment of your birth, calculated using the sidereal zodiac with Lahiri ayanamsa. The 27 nakshatras divide the 360-degree zodiac into segments of 13 degrees and 20 minutes each. Each nakshatra has a ruling planet, a presiding deity, an animal symbol, and a set of qualities that shape personality, emotional nature, and life themes more precisely than the sun sign or even the moon sign alone. The pada (quarter) of your nakshatra further refines the reading -- each nakshatra has four padas of 3 degrees 20 minutes each, corresponding to the four aims of life: dharma, artha, kama, and moksha.

Frequently asked questions

What is a nakshatra in Vedic astrology?

A nakshatra is one of 27 lunar mansions that divide the sidereal zodiac in Vedic astrology. The Moon travels through all 27 nakshatras in approximately 27.3 days -- one nakshatra per day. Your janma nakshatra (birth star) is the nakshatra the Moon occupied at your moment of birth. Nakshatras are one of the oldest elements of Jyotish, predating even the 12-sign rashi system, and they form the basis of Vimshottari Dasha calculations, marriage compatibility matching, and muhurta (auspicious timing) selection.

How is nakshatra different from moon sign (rashi)?

Your moon sign (rashi) is one of 12 signs, each spanning 30 degrees. Your nakshatra is one of 27 lunar mansions, each spanning 13 degrees 20 minutes. Every rashi contains 2.25 nakshatras. The nakshatra is a more precise placement -- two people with the same moon sign can have different nakshatras, giving them meaningfully different emotional natures and life patterns. In Vedic astrology, the nakshatra is often considered more important than the rashi for understanding personality and predicting life events.

What is a nakshatra pada?

Each nakshatra is divided into four equal sections called padas, each spanning 3 degrees 20 minutes. The four padas correspond to the four purusharthas -- the aims of human life: dharma (1st pada), artha (2nd pada), kama (3rd pada), and moksha (4th pada). Your pada refines your nakshatra interpretation significantly. For example, Ashwini pada 1 has a different character than Ashwini pada 4, even though both fall within the same nakshatra. Accurate birth time is needed to determine pada reliably.

Why does my nakshatra result differ from other calculators?

Differences between calculators usually come from which ayanamsa (zodiac correction factor) is used. This calculator uses Lahiri ayanamsa, the most widely used standard in modern Jyotish. Some calculators use Raman, Krishnamurti, or other ayanamsas, which shift planetary positions by one to several degrees. If your Moon is near the boundary between two nakshatras, a different ayanamsa can place it in a different nakshatra entirely. Accurate birth time also matters -- the Moon moves roughly one nakshatra per day, so a few hours can shift the result near a boundary.

How is nakshatra used in Vedic astrology practice?

Nakshatras are used in five main ways. First, as the basis of Vimshottari Dasha -- the 120-year planetary period system starts from your birth nakshatra's ruling planet. Second, in marriage compatibility (kundali milan), where the relationship between the partners' nakshatras determines guna score and compatibility factors. Third, in baby naming -- each nakshatra corresponds to specific syllables traditionally used for the child's first name. Fourth, in muhurta selection -- certain nakshatras are auspicious for specific activities. Fifth, in transit analysis -- the Moon's daily nakshatra affects the quality of each day.

What is the difference between Vedic and Western astrology nakshatra?

Western astrology does not use nakshatras. The nakshatra system is specific to Jyotish (Vedic astrology) and its close relatives in other Indian and Southeast Asian traditions. Western astrology uses the tropical zodiac, which is tied to the seasons rather than the fixed stars. Vedic astrology uses the sidereal zodiac, fixed to the actual star positions -- this produces a roughly 24-degree difference in planetary placements compared to Western calculations, which is why your Vedic moon sign often differs from your Western sun sign.

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.