Nakshtra Vishanadi or Visha Ghati

Like the Tithis, each Nakshtra has a negative Vishanadi, “poison vein,” "Toxic Channel" period, in all Nakshtras, is a certain length of arc, which weakens the Moon.

These periods have to be avoided. Generally it takes Moon 1H 36Min (4 Ghati) to transit this toxic channel in the zodiac. Hence in each Nakshtra there is a period of 1H 36Min, which is inauspicious.

 The following table gives the negative period for each Nakshtra along with the Nadis converted to degrees of longitude for ease of reference:

Nakshtra	Visha Ghati	Longitude of Moon (from)		Moon Zodiac Ends
Ashwini	51 to 54	Aries	11° 06′ 40″	12° 00′ 00″
Bharani	25 to 28	Aries	18° 40′ 00″	19° 33′ 20″
Krittika	31 to 34	Taurus	03° 20′ 00″	04° 13′ 20″
Rohini	41 to 44	Taurus	18° 53′ 20″	19° 46′ 40″
Mrigshira	15 to 18	Taurus	26° 26′ 40″	27° 20′ 00″
Ardra	22 to 25	Gemini	11° 20′ 00″	12° 13′ 20″
Punarvasu	31 to 34	Gemini	26° 40′ 00″	27° 33′ 20″
Pushya	21 to 24	Cancer	07° 46′ 40″	08° 40′ 00″
Ashlesha	33 to 36	Cancer	23° 46′ 40″	24° 40′ 00″
Magha	31 to 34	Leo	06° 40′ 00″	07° 33′ 20″
P. Phalguni	21 to 24	Leo	17° 46′ 40″	18° 40′ 00″
U. Phalguni	19 to 22	Virgo	00° 40′ 00″	01° 33′ 20″
Hasta	22 to 25	Virgo	14° 40′ 00″	15° 33′ 20″
Chitra	21 to 24	Virgo	27° 46′ 40″	28° 40′ 00″
Swati	15 to 18	Libra	09° 46′ 40″	10° 40′ 00″
Vishakha	15 to 18	Libra	23° 06′ 40″	24° 00′ 00″
Anuradha	11 to 14	Scorpio	05° 33′ 20″	06° 26′ 40″
Jyeshtha	15 to 18	Scorpio	19° 46′ 40″	20° 40′ 00″
Moola	57 to 60	Sagittarius	12° 26′ 40″	13° 20′ 00″
P. Ashada	25 to 28	Sagittarius	18° 40′ 00″	19° 33′ 20″
U. Ashada	21 to 24	Capricorn	01° 06′ 40″	02° 00′ 00″
Sravana	11 to 14	Capricorn	12° 13′ 20″	13° 06′ 40″
Dhanishta	11 to 14	Capricorn	25° 33′ 20″	26° 26′ 40″
Shatbhisha	19 to 22	Aquarius	10° 40′ 00″	11° 33′ 20″
P. Bhadrapada	17 to 20	Aquarius	23° 33′ 20″	24° 26′ 40″
U. Bhadrapada	25 to 28	Pisces	08° 40′ 00″	09° 33′ 40″
Revati	31 to 34	Pisces	23° 20′ 00″	24° 13′ 20″

Vishanadi is inauspicious for 4 Nadis. The 1st Nadi is said to bring ruin; the 2nd to adversely affect the life of the individual; the 3^rd to ruin everything and everyone; and the 4th is said to hurt the prosperity of the family.

Exception: Rohini, Mrigshira, Ardra, Swati, Anuradha, Uttara Ashadha and Sravana have no significant Vishanadi.

Exception: The Moon in the 9th or 10th aspected by Jupiter overcomes Vishanadi.

Exception: The waxing Moon in exaltation, in own Navamsa, in the Lagna, or in Simhasanamsa removes the ill effects of Vishanadi.