Nakshatras Explained — The 27 Lunar Mansions in Vedic Astrology

What is a Nakshatra

The word Nakshatra comes from Sanskrit: naksha (to approach or map) and tara (star). In practice, a Nakshatra is a segment of the zodiac, each spanning exactly 13 degrees and 20 minutes of arc (13°20′), corresponding loosely to the region of sky where the Moon is located on successive nights. Because the Moon moves approximately 13° per day, it passes through roughly one Nakshatra each day, completing the full cycle of 27 in approximately one sidereal month (27.3 days).

The 27 Nakshatras divide the full 360° sidereal zodiac evenly: 27 × 13°20′ = 360°. They begin at 0° Aries (Ashwini Nakshatra) and proceed continuously around the zodiac. Each Nakshatra is further divided into four Padas (quarters) of 3°20′ each, giving a total of 108 Padas — a number considered sacred in multiple Hindu traditions.

A 28th Nakshatra, Abhijit, is sometimes used in muhurta (electional astrology) but is generally excluded from the Nakshatra-based Dasa calculation system. When you see references to 28 Nakshatras, it includes Abhijit.

• Each Nakshatra spans exactly 13°20′ of the sidereal zodiac.
• The Moon transits roughly one Nakshatra per day.
• Each Nakshatra has 4 Padas (quarters) of 3°20′ each.
• 27 Nakshatras × 4 Padas = 108 Padas total.
• The 27 Nakshatras are grouped under 9 ruling planets.

The 27 Nakshatras and their ruling planets

Each of the 27 Nakshatras is assigned a ruling planet (Nakshatra Lord or Swami). This rulership is the foundation of the Vimsottari Dasa system, where the planet ruling your Janma Nakshatra determines which Dasa period you are born into. The nine planet–Nakshatra groupings cycle three times across the 27 Nakshatras.

The ruling planets in the Vimsottari sequence are: Ketu (7 years), Venus (20 years), Sun (6 years), Moon (10 years), Mars (7 years), Rahu (18 years), Jupiter (16 years), Saturn (19 years), Mercury (17 years) — totalling 120 years. The Nakshatras ruled by each planet are: Ketu rules Ashwini, Magha, Mula; Venus rules Bharani, Purva Phalguni, Purva Ashadha; Sun rules Krittika, Uttara Phalguni, Uttara Ashadha; Moon rules Rohini, Hasta, Shravana; Mars rules Mrigashira, Chitra, Dhanishtha; Rahu rules Ardra, Swati, Shatabhisha; Jupiter rules Punarvasu, Vishakha, Purva Bhadrapada; Saturn rules Pushya, Anuradha, Uttara Bhadrapada; Mercury rules Ashlesha, Jyeshtha, Revati.

The symbolic associations of each Nakshatra — their presiding deity (Devata), symbol, quality (Guna), and gender — are used in electional astrology and in interpretation. For example, Rohini Nakshatra (ruled by Moon, presided by Brahma, symbol: a chariot) is associated with creativity, beauty, and material abundance, making it favourable for starting creative or commercial ventures. Ardra (ruled by Rahu, presided by Rudra, symbol: a teardrop) is associated with intensity, storms, and transformation — less favourable for new beginnings but powerful for endings and overhauls.

• Ketu: Ashwini, Magha, Mula (7-year Dasa).
• Venus: Bharani, Purva Phalguni, Purva Ashadha (20-year Dasa).
• Sun: Krittika, Uttara Phalguni, Uttara Ashadha (6-year Dasa).
• Moon: Rohini, Hasta, Shravana (10-year Dasa).
• Mars: Mrigashira, Chitra, Dhanishtha (7-year Dasa).
• Rahu: Ardra, Swati, Shatabhisha (18-year Dasa).
• Jupiter: Punarvasu, Vishakha, Purva Bhadrapada (16-year Dasa).
• Saturn: Pushya, Anuradha, Uttara Bhadrapada (19-year Dasa).
• Mercury: Ashlesha, Jyeshtha, Revati (17-year Dasa).

How Nakshatras differ from Rashis (zodiac signs)

Rashis (the twelve zodiac signs) and Nakshatras divide the same 360° zodiac using different frameworks. A Rashi spans 30°. A Nakshatra spans 13°20′. This means each Rashi contains exactly 2.25 Nakshatras, and every Nakshatra either falls entirely within one Rashi or straddles two Rashis.

The practical difference: Rashis are used primarily for house assignment, sign-based planetary dignity (own sign, exaltation, debilitation), and planet–sign relationships. Nakshatras are used primarily for Dasa periods, muhurta selection, and marriage compatibility scoring. The two systems work together rather than replacing each other.

For example: the Moon in Rohini Nakshatra at 16° Taurus places the Moon in Taurus (Vrishabha Rashi). This gives the Moon both exaltation strength (best sign for Moon by Rashi) and Rohini Nakshatra qualities (creativity, beauty, strong material orientation, ruled by Moon itself — a powerful double-Moon emphasis). Using only the Rashi would miss the Nakshatra's specific timing and character texture.

How to find your Janma Nakshatra

Your Janma Nakshatra (birth star) is determined by the Moon's sidereal longitude at the exact time of your birth. To find it: calculate the Moon's sidereal position in degrees (0–360°), then divide by 13.333 (13°20′). The integer part of the result gives you the Nakshatra number (0-indexed from Ashwini = 0). Round down and look up the corresponding Nakshatra name.

For a practical example: if the Moon is at 52° sidereal longitude (which places it in Taurus, around 22° Taurus), divide 52 by 13.333 = 3.90. The integer is 3, meaning the 4th Nakshatra (0-indexed: 0=Ashwini, 1=Bharani, 2=Krittika, 3=Rohini). Moon at 52° sidereal is in Rohini Nakshatra.

Once you know the Janma Nakshatra, you also know the Dasa lord — the planet that rules that Nakshatra — and can calculate the balance of that Dasa at birth based on how far the Moon had progressed through the Nakshatra. This is the starting point for plotting the full 120-year Vimsottari Dasa sequence.

• Moon's sidereal longitude ÷ 13.333 → floor of result → Nakshatra number.
• The Janma Nakshatra's ruling planet = your first Dasa lord.
• Moon's progress through the Nakshatra = how much of the first Dasa remains at birth.

Nakshatras in muhurta and marriage compatibility

In muhurta (electional astrology — choosing auspicious timing for events), the Moon's Nakshatra on the day of an event is the primary variable. Certain Nakshatras are considered broadly auspicious for starting new ventures: Rohini, Mrigashira, Hasta, Chitra, Swati, Anuradha, Uttara Phalguni, Uttara Ashadha, and Uttara Bhadrapada are among the most commonly recommended. Others, like Bharani, Ardra, Ashlesha, and Jyeshtha, are avoided for new beginnings.

In Ashtakoota Kundli Matching (the traditional Indian marriage compatibility system), two of the eight compatibility categories directly involve Nakshatras: Nadi Koota (which checks Nakshatra-based Nadi group compatibility for biological compatibility and progeny) and Yoni Koota (which checks the animal symbol of each Nakshatra for sexual compatibility). The Tara Koota criterion checks the relationship between the bride and groom's Nakshatras from the Moon's position. Together, Nakshatra-based factors account for a significant portion of the total Ashtakoota score.

Understanding Nakshatras at even a basic level will improve any kundli reading because Nakshatra-level Moon placement adds specificity that Rashi-level placement alone cannot provide. Two people with Moon in Scorpio can have very different chart textures depending on whether the Moon is in Vishakha (Jupiter-ruled, expansion and ambition), Anuradha (Saturn-ruled, loyalty and discipline), or Jyeshtha (Mercury-ruled, leadership and jealousy).

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