Nakshatra Calculator

Enter the Moon’s sidereal (Nirayana) longitude from a Vedic birth chart or ephemeris. Do not enter tropical longitude unless it has first been converted to sidereal longitude using your chosen ayanamsa.
0 to less than 360.
Optional: 0 to less than 60.
Optional: 0 to less than 60.
Nakshatra
Pada
Nakshatra Lord
Chandra Rashi
Starting Syllable
Position in Nakshatra
Position in Rashi
Nakshatra Range
Calculation
This tool maps an already-calculated sidereal Moon longitude to the traditional 27-Nakshatra system. It does not calculate the Moon’s astronomical position from birth details and does not provide scientific or predictive claims about personality or future events.

What This Tool Does

This nakshatra calculator identifies your Janma Nakshatra (birth star), the lunar mansion the Moon occupied at your exact birth date, time, and place, according to Vedic astrology, along with its ruling planet and associated Rasi (moon sign).

You can also use this IBAN Calculator.

How It’s Calculated

The Moon completes a full cycle through all 27 nakshatras in about 27.3 days (a sidereal month), spending roughly one day in each, which is exactly why there are 27 of them. Each nakshatra is further divided into four padas (quarters) of 3°20′ each, adding another layer of precision. Because the Moon moves quickly, roughly 13° per day, an accurate nakshatra reading depends on precise birth date, time, and place, the same way an accurate moon sign reading does.

Edge Cases and Special Rules

  • 27 vs. 28 nakshatra systems: Most calculations use 27 nakshatras, though some traditions recognize an additional 28th (Abhijit) in specific contexts, this is a genuine variation between traditions, not an error.
  • Each nakshatra has a ruling planet in a fixed sequence: The 27 nakshatras are ruled, in a repeating cycle, by nine grahas (including the lunar nodes Rahu and Ketu), this sequence underlies Vimshottari Dasha, a system used in Vedic astrology to calculate planetary time periods in a person’s life.
  • Unknown or approximate birth time reduces accuracy significantly: Since the Moon can shift from one nakshatra to the next within a single day, an inaccurate birth time is a meaningful accuracy problem here, just as it is for moon sign calculations.
  • Padas matter for finer detail: Some traditional practices, including certain naming conventions, go a level deeper than the nakshatra itself and reference the specific pada (quarter) the Moon occupied.

Rasi (Moon Sign) vs. Nakshatra

These come from the same underlying Moon position but represent different levels of detail. Rasi divides the zodiac into 12 signs of 30° each, the broader moon sign most people are familiar with. Nakshatra divides the same 360° zodiac into 27 lunar mansions of 13°20′ each, a finer subdivision that gives more granular detail than the rasi alone. Two people with the same rasi can still have different nakshatras, since several nakshatras can fall within the span of one zodiac sign.

Who Uses This

  • People interested in Vedic astrology for personal reflection
  • Those exploring traditional naming conventions based on nakshatra and pada
  • Individuals curious about Vimshottari Dasha planetary period calculations
  • Those exploring nakshatra-based marriage compatibility matching as a traditional practice

Nakshatra Matching vs. Modern Compatibility Factors

These represent different approaches to the same general question of relationship compatibility. Traditional nakshatra-based matching (sometimes called Guna Milan) compares the birth stars of two people according to a set of traditional rules, and is used by some as part of marriage considerations within Vedic astrology. This is a distinct, belief-based framework, separate from modern compatibility factors like shared values, communication style, and personal connection, which aren’t something an astrological calculation can measure. Neither replaces the other, and nakshatra matching isn’t a scientifically validated predictor of relationship success.

FAQ

What is Nakshatra?

A lunar mansion, one of 27 (sometimes 28) segments of the zodiac the Moon passes through, used in Vedic astrology to identify a person’s birth star.

How many nakshatras are there?

27 are used in most standard calculations, though some traditions include a 28th (Abhijit) in specific contexts.

What’s the difference between Nakshatra and Rashi (zodiac sign)?

Rashi is one of 12 broader zodiac sign divisions; Nakshatra is a finer division into 27 lunar mansions, giving more detailed information from the same Moon position.

Can nakshatra matching predict marriage compatibility?

It’s a traditional practice some use for marriage considerations, not a scientifically validated predictor, treat it as one belief-based perspective among the factors that matter in a relationship.

Do I need my exact birth time for an accurate result?

Yes, since the Moon can shift nakshatras within a single day, an inaccurate or missing birth time reduces accuracy meaningfully.

Try It Above

Enter your exact birth date, time, and place in the nakshatra calculator above for the most accurate result. This is a traditional astrological framework intended for reflection, not a scientifically validated prediction method.