Nakshatra Gandanta — Three Water-Fire Borders (Revati-Ashwini, Ashlesha-Magha, Jyeshtha-Mula) & Half-Degree Measure
Nakshatra Gandanta shloka: "Revati Dashtra yo Sarpa Maghayo, Shakra-Mula yoh sandhou nakshatra gandantam." Three nakshatra Gandanta borders: (1) Revati → Ashwini (Pisces-Aries = water-fire sign border); (2) Ashlesha (Sarpa = Ashlesha, end of Cancer) → Magha (Leo = fire); (3) Jyeshtha (Shakra = Indra's nakshatra, end of Scorpio) → Mula (Sagittarius = fire). All three are water-nakshatra to fire-nakshatra transitions. Time measure: same as Tithi = 4 ghatikas total = 2 ghatikas (~48 min) on each side of the border. Degree measure: Moon moves ~13 arc minutes per ghatika → 2 ghatikas ≈ 26 arc minutes ≈ half a degree. "This Gandanta defined by Parashara is just half a degree — 30 minutes either side approximately. We are not even talking about a full degree here." Lagna Gandanta (truncated in transcript): by logical extension from the same fire-water framework, this applies to the ascending degree at the last half-degree of Cancer, Scorpio, or Pisces and the first half-degree of Aries, Leo, or Sagittarius. The default reference planet for nakshatra-based Gandanta is Moon unless otherwise specified. Muhurta implication: Moon at 29°40' in Cancer (last half-degree of Ashlesha) = nakshatra Gandanta → avoid this degree for any muhurta.
"This particular Gandanta defined by Parashara is just for half a degree — 30 minutes of arc on either side of the nakshatra border. We are not even talking about a full degree here. It is very tight, very specific."
— P.V.R. Narasimha Rao
Three Types of Gandanta
Type 1: Tithi Gandanta
Definition: The border between the 5th and 6th tithi, the 10th and 11th tithi, and the 15th (Purnima/Amavasya) and 1st (Pratipada) tithi.
Time measure: 4 ghatikas = 96 minutes total = 48 minutes on each side of the border
Specific borders:
- Last 2 ghatikas of Panchami + first 2 ghatikas of Shashthi
- Last 2 ghatikas of Dashami + first 2 ghatikas of Ekadashi
- Last 2 ghatikas of Purnima or Amavasya + first 2 ghatikas of Pratipada
"So these are the tithi gandantas. If at the time of birth or at the time of a muhurta, if the tithi running is one of these border tithis and it is very close to the border — within 2 ghatikas — it is Tithi Gandanta."
Why these tithis: Parashara gives a classification of 5 types of tithis (Nanda, Bhadra, Jaya, Rikta, Purna). These correspond to the pancha bhutas (5 elements). The borders between these classes are the Tithi Gandantas — analogous to how Rashi Gandanta occurs at the borders between water and fire signs.
Type 2: Nakshatra Gandanta
Shloka: "Revati Dashtra yo Sarpa Maghayo, Shakra-Mula yoh sandhou nakshatra gandantam; evam nadi-jatush-tayam."
Three Nakshatra Gandanta borders:
| Border | Nakshatras |
|---|---|
| Revati → Ashwini | End of Revati / Beginning of Ashwini |
| Ashlesha → Magha | End of Ashlesha (Sarpa = Ashlesha) / Beginning of Magha |
| Jyeshtha → Mula | End of Jyeshtha (Shakra = Indra = Jyeshtha) / Beginning of Mula |
Time measure: Same as Tithi — 4 ghatikas total = 2 ghatikas (~48 min) on each side
Degree measure: Moon moves ~13 arc minutes per ghatika → 2 ghatikas ≈ 26 arc minutes ≈ half a degree
"This particular Gandanta defined by Parashara is just for half a degree — 30 minutes either side approximately. We are not even talking about a degree here."
Muhurta implication: If Moon is at 29°40' in Cancer (= fag end of Ashlesha), it is within the last 2 ghatikas before entering Magha → Nakshatra Gandanta for that Muhurta.
Type 3: Lagna Gandanta
(Not yet defined in the transcript — class was cut off before this.)
By extension from the same framework: likely the last half-degree of water signs (Cancer, Scorpio, Pisces) and first half-degree of fire signs (Aries, Leo, Sagittarius) — the classic Rashi Gandanta definition applied to the ascending degree.