What is a nakshatra?
A nakshatra is one of the 27 lunar mansions the zodiac is divided into in Vedic astrology, each spanning 13°20' of the ecliptic. Where the Moon stood among them when you were born is your Janma Nakshatra — your birth star, and in traditional practice a more personal marker than the sign.
The division is lunar rather than solar: 27 nakshatras approximate the days the Moon takes to circle the zodiac, so the Moon occupies roughly one per day. That is why the date alone narrows your nakshatra down but the birth time settles it.
What is a pada?
Each nakshatra splits into four quarters called padas of 3°20' each, giving 108 padas across the zodiac. The pada sharpens the reading, and it is what traditional naming ceremonies use to choose the syllable a child's name begins with. It also feeds the Navamsa (D9) chart, since one pada corresponds to one navamsa sign.
Why the ruling planet matters
Every nakshatra has a ruling planet, and the sequence runs Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury, repeating three times across the 27.
That lord does more than describe you: it sets where your Vimshottari dasha begins. The planetary period you were born into, and the order of every period that follows for 120 years, is decided by the nakshatra your Moon occupied. You can see the whole sequence with the dasha calculator.
Nakshatra and rashi are not the same
Twelve signs of 30° and 27 nakshatras of 13°20' do not divide evenly into each other — a sign holds two and a quarter nakshatras. Both are read from the Moon in Vedic practice, not the Sun, which is why your Vedic Moon sign often differs from the sun sign you already know.
How this finder works
The Moon's position is computed with the Swiss Ephemeris and converted to sidereal longitude using the Lahiri ayanamsha. Dividing that longitude by 13°20' gives the nakshatra, and the remainder gives the pada. The same is done for every other planet, since each one sits in a nakshatra of its own and those matter when reading a chart in detail.