Nakshatra — The 27 Lunar Mansions

We come now to the most ornate and the oldest of the five limbs — the nakshatra (नक्षत्र). The Sanskrit word means “a star, a heavenly luminary,” from the root nakṣ (to approach, to attain). In practice it refers to one of 27 equal divisions of the ecliptic, each named after a constellation or star-cluster in that region of the sky.

The nakshatra system is older than the twelve-rashi zodiac in Indian astronomy. It appears already in the Atharvaveda and the Yajurveda — texts dating to roughly 1000 BCE — long before the rashi (sign) framework was imported from Greco-Babylonian astronomy. The nakshatras are therefore the indigenous Indian sky-grid. The rashis came later. Where rashi astrology emphasises the Sun, nakshatra astrology has always emphasised the Moon. This is one of the deep distinguishing features of the Indian tradition compared to its Western counterpart.

This chapter is long. There is no shortcut. There are 27 nakshatras, each with its own profile. We will first build the framework — what a nakshatra is, how the math works, what attributes are layered on each — and then walk through the 27 in a master table. Treat the table as a reference. You do not need to memorise it; you need to be able to look up any nakshatra and read its row.

The 27-fold division of the sky

The ecliptic — the apparent annual path of the Sun against the background stars, which the Moon and planets also closely follow — is a great circle, 360°. The nakshatra system divides this circle into 27 equal segments, each measuring:

360° ÷ 27 = 13°20′ (thirteen degrees and twenty minutes of arc)

Each segment is a nakshatra. The Moon, in its 27.32-day sidereal orbit around the Earth, passes through one nakshatra roughly each day. (This is why there are 27 of them — the Moon has “27 wives,” in the mythological framing of the Vishnu Purana, with the Moon visiting one each night.) On any given night, the Moon is “in” one of the 27 nakshatras — meaning, its ecliptic longitude falls within that segment’s 13°20′ range.

The mathematical formula for the Moon’s nakshatra at any moment is:

Nakshatra number = floor(λ_M ÷ 13°20′) + 1

where λ_Mis the Moon’s nirayana ecliptic longitude in degrees, and the result is taken modulo 27. The first nakshatra (Ashwini) starts at 0° of Mesha (Aries) in the sidereal zodiac, and the 27th (Revati) ends at 30° of Meena (Pisces).

Why 27 and not 28?

Some of the oldest Indian texts mention 28 nakshatras, including an additional one called Abhijit (अभिजित्) — the bright star Vega — placed between Uttara Ashadha and Shravana. The classical reduction to 27 happened because 360 divides evenly by 27 (giving 13°20′ per nakshatra) but not by 28 (which would give an awkward 12.857°). Abhijit was retained for special purposes — most notably, the auspicious noontime muhurta named after it — but dropped from the regular sky-grid.

For the daily panchang, 27 is the operating number. We will meet Abhijit again in the muhurta chapter, where it has its own honoured slot.

The pada — quartering the nakshatra

Each nakshatra of 13°20′ is further divided into four equal padas (पाद)— “quarters” or “feet.” Each pada is therefore 3°20′. Padas matter because while the nakshatra system uses 27 segments, the rashi (sign) system uses 12 segments — and 27 nakshatras × 4 padas = 108 padas, while 12 rashis × 9 padas = 108 padas. This means each rashi contains exactly 9 padas, or 2¼ nakshatras.

The number 108 — sacred in Indian tradition — is no coincidence: it is the natural product of these two complementary divisions of the same circle. Mala beads come in 108. Pada-by-pada analysis is foundational to detailed kundli reading; we will return to it in Book 2.

The four classifications layered on each nakshatra

Each of the 27 nakshatras carries multiple labels that are used in muhurta selection, compatibility analysis (e.g., for marriage), and chart interpretation. The four most important classifications are:

Ruling lord (graha) स्वामी

Each nakshatra is ruled by one of the nine grahas. The rulership cycles in a fixed order: Ketu, Shukra, Surya, Chandra, Mangala, Rahu, Guru, Shani, Budha — repeating three times to cover all 27. So Ashwini (1) is ruled by Ketu, Bharani (2) by Shukra, ..., Magha (10) by Ketu again, and so on. This rulership is the basis of the Vimshottari dasha (विंशोत्तरी दशा) — the most widely-used planetary period system in Indian astrology, where the sequence of life periods is determined by the nakshatra of the Moon at birth. We will return to dasha in Book 2.

Gana — the temperamental category गण

The 27 nakshatras are sorted into three gana types — three groups of nine.

• Deva gana (देव गण) — divine. Light, refined, harmonious. (Ashwini, Mrigashira, Punarvasu, Pushya, Hasta, Swati, Anuradha, Shravana, Revati.)
• Manushya gana (मनुष्य गण) — human. Mixed, balanced, pragmatic. (Bharani, Rohini, Ardra, Purva Phalguni, Uttara Phalguni, Purva Ashadha, Uttara Ashadha, Purva Bhadrapada, Uttara Bhadrapada.)
• Rakshasa gana (राक्षस गण) — demonic. Intense, fierce, transformative. (Krittika, Ashlesha, Magha, Chitra, Vishakha, Jyeshtha, Mula, Dhanishta, Shatabhisha.)

Despite the names, none of these is “good” or “bad” in itself. They describe temperament. Gana compatibility is checked when matching horoscopes for marriage — Deva-Deva and Manushya-Manushya are considered compatible; Deva-Rakshasa pairings are flagged for scrutiny. Rakshasa nakshatras are powerful for endeavours requiring intensity (warfare, demolition, deep transformation) and less suited for delicate work.

Yoni — the animal nature योनि

Each nakshatra is associated with one of fourteen animals. Yoni is used in marriage compatibility — friendly yoni pairs (cow-buffalo) score well, hostile yoni pairs (dog-deer, cat-rat) score poorly. The fourteen yonis are: horse, elephant, sheep, serpent, dog, cat, rat, cow, buffalo, tiger, deer, monkey, mongoose, lion. Two yonis are extra: there is one nakshatra (Hasta) with buffalo and one with cow as a complementary pair, and so on.

Varna — the caste-equivalent classification वर्ण

Each nakshatra is also assigned one of the four varnas: Brahmin (priest, scholarly), Kshatriya (warrior, governing), Vaishya (trader, productive), Shudra (servant, supporting). These classifications come from classical texts and are used primarily in muhurta selection (matching the activity to the varna of the active nakshatra). They should not be confused with the social caste system — the varna-of-nakshatra terminology predates the rigid social hierarchy and refers to the mode of activity each nakshatra favours. Brahmin nakshatras favour study, ritual, and contemplation; Kshatriya nakshatras favour command, action, leadership; Vaishya nakshatras favour trade, accumulation, exchange; Shudra nakshatras favour service, craft, manual production.

Other classifications you will encounter

Beyond the four major classifications, classical texts assign each nakshatra additional attributes. We list them briefly so you recognise them in source texts.

• Tatva (तत्त्व) — the element: prithvi (earth), apas (water), tejas (fire), vayu (air), or akasha (ether). Used in muhurta and ritual.
• Guna (गुण) — sattva, rajas, or tamas. The fundamental quality.
• Direction — each nakshatra has an associated cardinal direction, used for vastu and travel muhurta.
• Shakti (शक्ति) — the specific power or force the nakshatra embodies. (Ashwini = power to swiftly attain; Bharani = power to take away; Krittika = power to burn; etc.)

Special groupings: gandanta and panchaka

Gandanta — the “knot” nakshatras गण्डान्त

Three pairs of nakshatras occur at the boundary of a fire rashi and a water rashi: Revati-Ashwini, Ashlesha-Magha, and Jyeshtha-Mula. The transitional 3°20′ on either side of these boundaries is called gandanta— “the end of a knot.” Births and certain ritual undertakings during gandanta are flagged for careful attention; the transition between elements (water-fire-water-fire around the zodiac) creates astrologically charged moments.

Panchaka — the inauspicious five पंचक

The last five nakshatras — Dhanishta (last half), Shatabhisha, Purva Bhadrapada, Uttara Bhadrapada, Revati — together form panchaka (पंचक). The Moon’s transit through this five-nakshatra region (about 4 days each month) is traditionally inauspicious for activities like construction roof-laying, southward travel, gathering firewood, and bed purchase. The traditional reasoning involves the watery nature of these nakshatras and a series of myths in theSkanda Purana; the practical effect is that construction crews and traditional Hindu and Jain families often avoid certain undertakings during panchaka. Panchaka is flagged on this panchang when applicable.

The 27 nakshatras: master reference table

The table below gives, for each nakshatra: the number, the name in transliteration and Devanagari, the symbol, the presiding deity, the ruling graha, the longitude span in the nirayana zodiac, the gana, the yoni, and the varna. This is the reference table for the rest of the book; we will not repeat it.

A closer look at four important nakshatras

Twenty-seven detailed profiles would fill a book of their own. We will look at four in some depth — the most often-mentioned in panchang reading — to give you a model for how to read any nakshatra’s row in the master table.

Pushya (8th) पुष्य

Symbol: cow’s udder. Deity: Brihaspati (Jupiter). Lord: Shani (Saturn). Longitude: Karka (Cancer) 3°20′ – 16°40′. Pushya is widely considered the single most auspicious nakshatra in the zodiac — its name itself means “nourishment.” A muhurta begun under Pushya (especially when it falls on a Thursday — “Guru Pushya”) is regarded as nearly invincible for new undertakings: business beginnings, financial investments, education enrolment. The combination “Ravi Pushya” (Sunday + Pushya) is similarly powerful. The cow’s udder symbol captures the sense: an inexhaustible source of nourishment.

Magha (10th) मघा

Symbol: royal throne. Deity: the Pitris (departed ancestors). Lord: Ketu. Longitude: Simha (Leo) 0°00′ – 13°20′. Magha’s connection to ancestors makes it a primary nakshatra for shraddha rites and remembrance of the deceased. Its themes are lineage, inheritance, ancestral authority, and hidden continuities. Magha is one of the gandanta nakshatras (it begins right after the Ashlesha-Magha boundary at the end of Karka), and birth in early Magha is flagged. The throne symbol is significant — Magha-born natives are often associated with positions of inherited or bestowed authority.

Mula (19th) मूल

Symbol: bunch of roots. Deity: Nirriti (the goddess of dissolution). Lord: Ketu. Longitude: Dhanu (Sagittarius) 0°00′ – 13°20′. The name mulameans “root, source, original cause.” This is an investigative, philosophical nakshatra — the temperament of one who digs to the bottom of a question. Its association with Nirriti gives it a dissolving, demolishing quality: Mula favours the destruction of false structures so that the true root can be reached. It is also a gandanta nakshatra (at the Vrischika-Dhanu boundary). Birth in the first pada of Mula is traditionally observed with particular ritual care.

Revati (27th) रेवती

Symbol: a fish. Deity: Pushan (a solar deity, protector of travellers and herds). Lord: Budha (Mercury). Longitude: Meena (Pisces) 16°40′ – 30°00′. Revati is the last nakshatra — the completion of the cycle before it returns to Ashwini. It carries the theme of safe arrival after a long journey, of fulfilment, of pastoral abundance. It is part of panchaka and the final gandanta region. Revati natives are often drawn to caretaking, journeys (literal and metaphorical), and the consolation of those at endings.

How nakshatra appears in your panchang

Open the daily panchang on this site. The nakshatra line shows two things:

1. The current nakshatra at sunrise— which one the Moon is in when the day begins. This is the “day’s nakshatra” for muhurta and ritual purposes.
2. The end-time of that nakshatra— the clock time at which the Moon will exit this nakshatra and enter the next. After that time, today’s nakshatra is technically the next one in sequence — though the panchang convention is to label the day with the nakshatra present at sunrise (the “udaya nakshatra” analogue of udaya tithi).

On any given day, one nakshatra usually dominates, but because the Moon takes about 27.32 ÷ 27 = 1.012 days per nakshatra, the nakshatra changes once every roughly 24 hours, sometimes a little more, sometimes less.

The Moon’s nakshatra and personal astrology

While the day’s tithi is the most important muhurta-determining factor in everyday observance, the nakshatra of the Moon at birth — called the janma nakshatra (जन्म नक्षत्र) — is arguably the most important single fact in classical Indian astrology. The janma nakshatra:

• Determines the starting point of Vimshottari dasha — the 120-year planetary period sequence that structures the entire predictive timeline of a kundli.
• Provides the namakarana (naming) syllable in the traditional Indian naming convention: each nakshatra has four padas, each pada associated with a Sanskrit syllable, and a child’s formal name traditionally begins with the syllable of the pada in which their natal Moon falls.
• Is checked for marriage compatibility against the partner’s janma nakshatra — the gana, yoni, varna, and other attributes are matched in a system called ashta-koota (अष्ट कूट)— “eight folds.”
• Provides the natal “tara” — a sequence of nine tara categories (janma, sampat, vipat, kshema, pratyari, sadhaka, vadha, mitra, parama-mitra) that flag whether the current transiting nakshatra is favourable or not for a given native.

We will not develop these in Book 1. They belong to the chart reading discussion in Book 2. We mention them so you understand how central nakshatra is to the larger system.

What you should be able to do now

After this chapter, you should be able to:

• State the size of one nakshatra (13°20′) and the formula for computing it from longitude.
• Explain why there are 27 nakshatras and what the 28th (Abhijit) is for.
• Define a pada (3°20′) and explain why 27 × 4 = 108 = 12 × 9.
• List the four major classifications layered on each nakshatra: lord, gana, yoni, varna.
• Use the master table to look up any nakshatra’s attributes.
• Define gandanta and panchaka, and identify which nakshatras are involved in each.
• Explain how the Vimshottari dasha period is anchored to the natal nakshatra (janma nakshatra).
• Read the nakshatra line of a daily panchang and know what the end-time means.

Open the daily panchang. Find today’s nakshatra. Look it up in the master table — note its lord, gana, yoni, and varna. Now think about what activity you have planned today. Does it match the temperament of this nakshatra? You do not need to believe in the prescription to find the question interesting.

In the next chapter we look at the third of the five limbs — yoga. Yoga is computed from the sum of Sun and Moon longitudes (rather than the difference, which gave us tithi). It is the least-discussed of the five limbs in common conversation but plays an important role in muhurta selection.