The auspicious starting sound (akshara) for your child's name from the Moon nakshatra and pada.
In the Vedic naming tradition an auspicious name begins with the akshara assigned to the nakshatra and pada the Moon occupied at the moment of birth. This tool takes the Moon's sidereal longitude for your date, time and place, finds the nakshatra it falls in, works out which of that nakshatra's four padas it occupies, and returns the single syllable that pada prescribes, along with the other three syllables of the same nakshatra, which are traditionally acceptable too.
The arithmetic is worth seeing, because it is what makes the birth time matter. The zodiac of 360 degrees is divided into 27 nakshatras of 13 degrees 20 minutes each, and each nakshatra into four padas of 3 degrees 20 minutes, so a pada is exactly one navamsa.
That makes 108 quarters in all. The Moon is the fastest of the nine grahas, covering roughly thirteen degrees a day, so it crosses one pada in about six hours: a birth recorded only as a date can easily land on either side of a pada boundary, and the prescribed syllable changes with it.
This app keeps per-attribute provenance for its nakshatra table, which means a column is cited only where a chapter and verse has actually been read for it, and a column with no entry is uncited by its own absence rather than by borrowing the neighbouring column's citation. The nakshatra deity column, for instance, traces to the Taittiriya Brahmana III.1.4-5. The naming-syllable column carries no such entry.
So the honest statement is this: the 27 by 4 akshara table is the naming table the Jyotisha handbooks transmit and that Indian practice uses, and this app has not verified a Sanskrit locus for it. That does not make it less usable, because the tool's job here is arithmetic and lookup rather than interpretation, and the arithmetic that selects the cell is fully classical.
But it does mean the page will not dress the table as scripture, and it will not tell you what a name beginning with a given sound will make a child become, because nothing in the corpus this app has read says that.
Under the prescribed sound the page joins a second system, and it is not Vedic at all. It computes the Mulank from the day of the month you were born, reduced to a single digit, and the Bhagyank from all the digits of the full birth date reduced the same way, then compares candidate names by their Chaldean letter values.
There is no Sanskrit locus for the Chaldean letter table, none for Mulank and Bhagyank, and none for the friend-and-enemy grid used to decide whether a name harmonises, so this material is attributed to its modern authors and never given a classical citation chip.
The two systems are reported together because they are sold together, and they are never merged because nothing in either tradition supplies an exchange rate between a prescribed syllable and a number. A name satisfying both is shown as satisfying both.
A name satisfying only the akshara is shown in its own list with the number that failed printed beside it, and a name satisfying only the number is shown with the sound it does not have. The Chaldean root carries the verdict against Mulank and Bhagyank because those are single-digit quantities, while the Pythagorean expression is reported beside it on its own scale with 11, 22 and 33 kept intact.
For many nakshatras the two rules genuinely contradict each other: every name in the corpus that begins with the prescribed sound lands on a number the grid calls unfriendly for that birth. The page renders that deadlock rather than resolving it silently, because a resolution would mean quietly preferring one tradition over the other and the reader would never see the choice being made.
There is one move that satisfies both without choosing, and the page offers it: respelling. Alternative spellings are generated with the matched akshara held as a hard constraint, so every variant still begins with the sound the nakshatra prescribes while reaching a friendlier number. That is a real resolution rather than a compromise, and it exists precisely because the prefix can be enforced while the letters after it vary.
You get the Moon's nakshatra and pada, the syllable that pada prescribes with the nakshatra's other three shown beside it, a corpus of names grouped by which of the two rules they satisfy, and the numbers each name reaches so that you can check the verdict yourself.
On the strict reading only the exact pada's akshara counts; the customary widening to all four sounds of the nakshatra is shown separately rather than assumed, because the two rules deadlock far more often under the strict form and the page prefers to show that.
It will not choose a name for you, and it will not say anything about the child's future character, health, marriage or fortune from the name. Gender filters the corpus because the corpus is tagged that way; it changes no verdict, and there is no reading here in which a number is lucky for a boy and unlucky for a girl. What the page does is constrain a search honestly and show you both constraints working.