Nakshatra

What is a nakshatra?

A nakshatra is a lunar mansion — one of 27 equal segments the ecliptic is divided into, each spanning exactly 13°20′. They are called lunar mansions because the Moon, moving about 13° a day, spends roughly one day in each, so the nakshatra is essentially “where the Moon is sleeping tonight.” It is the third of the five limbs (angas) of the panchang, and arguably the busiest: it drives the Vimshottari dasha, most of muhurat, and birth-star compatibility.

Unlike the tithi, which measures the angle between the Moon and Sun, a nakshatra measures the Moon’s absolute position in the sidereal zodiac. It cares only where the Moon is, not what the Sun is doing.

The twenty-seven nakshatras

Each nakshatra has a ruling planet (its dasha lord), a presiding deity, and a symbol that encodes its character. AstroShruti computes the name, the pada and the lord from the engine; the deity and symbol below are the classical attributions that colour interpretation.

The lords are not decorative: they are the same nine-planet cycle — Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury — repeated three times over the 27 nakshatras, and that cycle is the order of the Vimshottari dasha. Your janma nakshatra’s lord is the dasha you were born under.

What about the 28th, Abhijit?

Some muhurat traditions insert a 28th nakshatra, Abhijit, cut from the last quarter of Uttara Ashadha and the first sixteenth of Shravana. It is prized as a “victorious” window around solar noon (the same root as the Abhijit Muhurat). But for the everyday panchang, the dasha, and the pada arithmetic below, the count is 27 — the extra star would break the clean 13°20′ division. AstroShruti reports the standard 27 for the Moon’s nakshatra.

The four padas — and the Navamsa link

Every nakshatra divides into four quarters called padas, each 3°20′ wide. The arithmetic is elegant:

• 27 nakshatras × 4 padas = 108 padas (the same 108 of the mala).
• 108 padas ÷ 12 signs = nine padas per sign.

Those nine padas per sign are exactly the nine divisions of the Navamsa (D9) chart — which is why a planet’s nakshatra pada tells you its navamsa sign without a separate calculation. A birth-star reading always names the pada (Rohini pada 3, say), because the pada is what carries the nakshatra down into the finer charts.

Ganda Moola and Varjyam — the flagged windows

Two nakshatra-based cautions are computed, not just described:

• Ganda Moola — the six gandanta (“knot”) stars ruled by Ketu or Mercury: Ashwini, Ashlesha, Magha, Jyeshtha, Mula and Revati. They sit at the seams between water and fire signs, and a Moon here at birth is traditionally given a shanti ritual. AstroShruti flags the Ganda Moola window whenever the Moon is in one of these six.
• Varjyam (tyajya) — a “poison” slice within each nakshatra, a fixed fraction of that star’s span to be avoided for auspicious work; the Amrit Kaal is its benign counterpart, half a nakshatra away. AstroShruti computes the Varjyam window for the day’s nakshatra.

Reading a nakshatra in AstroShruti

Open the Panchang for any date and location and the nakshatra is named with its pada and end moment. An illustrative reading looks like this:

Rohini · Pada 3 — until 15:20, then Mrigashira · lord Moon

Read plainly: the Moon is in Rohini, its third quarter (so its navamsa is the third of Taurus’s run), ruled by the Moon itself; the star ends at 3:20 pm and Mrigashira begins. The end moment is a fixed astronomical instant shown in the local clock time of the date and location you chose — and because the panchang’s day runs sunrise to sunrise, which nakshatras appear in a day’s list depends on your location too.

Open the Panchang for any date and location to see the Moon’s exact nakshatra, its pada, lord and end moment, plus any Ganda Moola or Varjyam window.

Common mistakes

• Confusing the nakshatra lord with the sign lord. The nakshatra lord is a Vimshottari lord (Ketu can rule a nakshatra; it rules no sign). They answer different questions.
• Forgetting the pada. Two people can share a janma nakshatra and land in different navamsa signs — the pada is what separates them.
• Counting on 28. Abhijit is a muhurat overlay, not a 28th slot in the dasha or the pada map; mixing it in breaks the 13°20′ arithmetic.
• Treating Ganda Moola as doom. It is a flag for a traditional remedy, not a sentence — and it is read alongside the rest of the chart.

What AstroShruti computes — and what it doesn’t

AstroShruti computes the astronomical nakshatra: the Moon’s sidereal position for any date, time and location, the nakshatra name, its pada (1–4), its Vimshottari lord, and the exact end moment — the same engine that seeds every Vimshottari dasha. It flags Ganda Moola and computes the Varjyam window where they apply.

What it does not compute is the lore. The presiding deity, the symbol, the personality and career readings, and the marriage-compatibility verdict are interpretive traditions layered on top of the astronomy. We give you the exact position, pada and lord so those readings rest on solid ground — but the meaning you draw from Rohini or Mula remains a matter of tradition and judgment.

Related concepts

• Tithi — the lunar day, read with the nakshatra for muhurat.
• Yoga — the Sun–Moon combination, the next limb of the panchang.
• Vara — the weekday, the first limb; certain vara + nakshatra pairs form their own auspicious or inauspicious yogas.
• Vimshottari Dasha — the 120-year timeline seeded by your janma nakshatra and its lord.
• Ashtakoota Milan — the eight-fold match, several of whose kootas are computed from the two birth nakshatras.