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Deterministic astrological timing calculators.
How this calculation works
This tool finds the naming sound tied to the pada of your natal Moon. The Moon's sidereal longitude is computed with the Swiss Ephemeris using the Lahiri ayanamsha, then converted to a pada. Each nakshatra is one of 27 lunar mansions, and each nakshatra is divided into four padas, giving 108 padas in total. Each pada has one traditional starting sound.
The pada is derived in exact arcseconds. A pada is 3 degrees and 20 minutes wide, which is exactly 12,000 arcseconds, and the pada index is the Moon's longitude in arcseconds divided by 12,000. Using exact arcseconds rather than rounded decimals keeps the result correct even when the Moon is close to a pada boundary.
The pada-to-sound mapping is traditional doctrine associated with the Swar Siddhanta naming-sound system. The transliteration shown here was authored independently from the devanagari and cross-checked against the Wikipedia nakshatra table. This is a naming custom, presented neutrally; the tool maps to a sound and never suggests a name.
Nakshatra, pada, and the naming sound
The 27 nakshatras each span 13 degrees and 20 minutes of the zodiac, and each divides into four equal padas of 3 degrees and 20 minutes. The Moon's pada at birth is the seed of many Vedic timing calculations, and in the naming custom it also carries a traditional starting sound, an akshara.
The tool returns that sound three ways: the devanagari akshara, the IAST transliteration with diacritics, and the common latin variants. Showing all three removes the ambiguity of a single romanized spelling, where similar looking letters can stand for different sounds.
Why birth time matters
The Moon moves about 13 degrees a day, so it crosses a pada boundary roughly every six hours. Across a single day it can pass through two or three padas, and therefore two or three different naming sounds.
With a birth time, the tool pins the exact pada. Without one, it uses noon and lists every pada the Moon occupied on that day, so you can see all the sounds it could be. A birth time is the only way to narrow it to one.
Sources and honesty
The mapping from pada to sound is traditional fact, associated with the classical Swar Siddhanta doctrine. Facts of this kind are not owned by any one publisher. The transliteration here was authored independently and cross-verified against the devanagari in the Wikipedia nakshatra table.
Drik Panchang, a modern website, publishes a version of this list and was consulted only as a modern secondary reference. It is not a classical source, and its table was not reproduced. The dataset records its sources, access dates and the one tradition-split cell that was resolved by an explicit editorial choice.
Methodology
Ephemeris: Swiss Ephemeris (pyswisseph 2.10.3.2) in sidereal mode with the Lahiri ayanamsha (Chitrapaksha). The Moon's sidereal longitude comes from a single Swiss Ephemeris sidereal path. Zodiac: sidereal.
Pada derivation: pada index equals the Moon's sidereal longitude in arcseconds divided by 12,000, as a whole number from 0 to 107. Naming sound: read from the reviewed Swar Siddhanta naming-sound dataset, version 1.0.0. Birth time is optional; if it is unknown, noon is used and all padas crossed that day are listed.
Frequently asked questions
- What is a Vedic naming sound (nakshatra akshara)?
- In Vedic tradition, a birth name is sometimes chosen to begin with a particular sound, or akshara, tied to the Moon's position at birth. Each of the 27 nakshatras is divided into four quarters called padas, and each of the 108 padas has one traditional starting sound. This tool finds the pada of your natal Moon and returns that pada's sound. It is a naming custom rather than a rule, and it points to a sound, not to a specific name.
- Does my child's name have to start with this sound?
- No. This is a traditional custom, not an obligation. Many families follow it, many use it loosely, and many do not use it at all. The tool tells you what the traditional sound is so you can decide what to do with it. It never suggests or generates names, and it makes no claim that a name must begin with the sound.
- How is the pada calculated?
- From the Moon's sidereal longitude. Each pada spans exactly 3 degrees and 20 minutes of arc, which is 12,000 arcseconds; the 108 padas together cover the full 1,296,000 arcseconds of the zodiac. The pada index is the Moon's longitude in arcseconds divided by 12,000, taken as a whole number from 0 to 107. Working in exact arcseconds, rather than rounded decimals, keeps the result correct right up to a pada boundary.
- What ayanamsha and ephemeris does this use?
- The Moon's position is computed with the Swiss Ephemeris (pyswisseph) in sidereal mode using the Lahiri ayanamsha (Chitrapaksha). The Moon's longitude comes from a single Swiss Ephemeris sidereal path, chosen because pada boundaries are narrow and a fraction of a degree can change the pada near an edge. This is a more precise path than the one the Vedara Moon Sign tool uses, so very close to a pada boundary the two can differ slightly.
- Why does birth time matter here?
- The Moon moves about 13 degrees a day, roughly half a degree an hour, and a pada is only 3 degrees and 20 minutes wide. Across a single day the Moon can cross one or even two pada boundaries, so it can pass through more than one naming sound in a day. If you do not know the birth time, the tool uses noon and lists every pada the Moon occupied on that day so you can see all the possible sounds. A birth time narrows it to one.
- Where does the naming-sound data come from?
- The pada-to-sound mapping is traditional doctrine, associated with the Swar Siddhanta system of naming sounds. That mapping is a traditional fact. The transliteration into devanagari, IAST and latin here was authored independently and cross-checked against the devanagari in the Wikipedia nakshatra table. Drik Panchang, a modern website that publishes a version of this list, was consulted as a modern secondary reference; it is not a classical source and its table was not reproduced.
- Why devanagari, IAST and latin all together?
- A single romanized syllable is ambiguous. Spellings like Na and Ṇa, or Cha and Chha, look similar in plain latin but are different sounds in the original. Showing the devanagari akshara, the IAST transliteration with diacritics, and the common latin variants together removes that ambiguity, so you can see exactly which sound the tradition intends.