Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · Signs, Planets, Birth
जातकम् १
पंचेष्टाष्टाद्रिपंचांशा कुजार्कीज्यज्ञशुक्रगाः ।ओजे विपर्ययाद्युग्मे त्रिशांशेशाः समीरिताः ॥ ४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 55, verse 4.
The trimshamsha (one-thirtieth of a sign) parts are 5, 5, 8, 7 and 5 degrees. They belong to Mars, Saturn, Jupiter, Mercury and Venus. In an odd sign this is the order. In an even sign it is reversed.
Simple meaning: Each sign has five parts of 5, 5, 8, 7 and 5 degrees. They go to Mars, Saturn, Jupiter, Mercury and Venus.
क्रियणतौलिककर्काद्या मेषादिषु नवांशकाः ।
Navamsha counting starts from Aries, Capricorn, Libra and Cancer. The twelfth parts are counted from the sign itself.
गोजाश्च कर्कयुग्मेन रात्र्याख्या पृष्ठकोदयाः ।
Taurus, Aries, Cancer and Gemini are night signs. The rest are day signs. Pisces rises both ways.
पुमान् स्त्री च क्लीबश्चरस्थिरद्विःस्वभावकाः ।
The signs are male, female or neuter, moving, fixed or dual. Aries and the others point to directions starting from the east.