Sapta Nadi Chakra

Sapta-nādi-chakra is very useful in prediction of weather, esp of rainfall. There are two variants based on two ancient sources of Sapta-nādi-chakram:

Narapati-jaya-charyā and Krishi-Parāshara, and all later texts are based on them, such as Kadambini.
The original source of Sapta-nādi-chakra was a Tantric text 'Yāmaleeya-Svarodaya'.


Here, both variants of Sapta-nādi-chakra currently used by many traditional panchangas are being presented ('Nakshtra' means Nakshatra):

Original (Ancient) Design :
Nādi	Chandā	Vāyu	Dahnā	Saumyā	Neerā	Jala	Amrit
Lord	Saturn	Jupiter	Mars	Sun	Venus	Mercury	Moon
Nakshtra	3	4	5	6	7	8	9
Nakshtra	16	15	14	13	12	11	10
Nakshtra	17	18	19	20	21	22	23
Nakshtra	2	1	28	27	26	25	24

Narapatijayacharyā's (~1000 AD) Design :
	Heat Providing				Rain Providing
Nādi	Chandā	Vāyu	Dahnā	Saumyā	Neerā	Jala	Amrit
Lord	Saturn	Sun	Mars	Jupiter	Venus	Mercury	Moon
Nakshtra	3 M	4 M	5 M	6 F	7 F	8 F	9 F
Nakshtra	16 N	15 F	14 F	13 F	12 F	11 F	10 F
Nakshtra	17 N	18 N	19 M	20 M	21 M	22 M	23 M
Nakshtra	2 M	1 M	28 M	27 M	26 M	25 M	24 M
M = Male    -                             F = Female                      -                         N = Neutral

Chandā-nādi represents fierce winds.

Vāyu-nādi is for more than normal winds.

Dahnā-nādi represents more temperature.

Saumyā-nādi represents normal conditions.

Neerā-nādi represents normal rains.

Jala-nādi represents more rains.

Amrit-nādi represents maximum rains.

Start from Krittikā (= number 3, numbering begins from Ashvini) in Chandā-nādi and assign nakshatras to nādis in the serpentine manner as shown in the tables above. Traditional texts present Sapta-nādi-chakra in a confusing manner, which makes it difficult to decide which of the two chakras is correct.

Here, both have been presented in a well-ordered manner, which makes it easy to see that the left table is correct, because in it planets are placed according to their geocentric (or Merucentric) distances: Saturn-Jupiter-Mars-Sun-Venus-Mercury-Moon.

In the right table, Jupiter and Sun are accorded lordship of wrong nādis.
Narapatijayacharyā can be procured from Chowkhambā Sanskrit Sansthān (Vārānasi). It gives some ancient rules for using this chakra.