Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
विष्टिरग्नौ पौर्णमास्यां करोलीन्द्रे तृतीयकम् ।घोरा याम्यां तु सप्तम्यां दशम्यां रौद्रसौम्यगा ॥
In the full Agni Purana this is chapter 123, verse 13.
Vishti (bad half of a moon day) is in the south-east on the full moon day. Karoli is in the east on the third. Ghora is in the south on the seventh. On the tenth, Raudri goes to the north.
Simple meaning: Vishti moves by moon day: south-east on the full moon, east on the third, south on the seventh, north on the tenth.
चतुर्दश्यां तु वायव्ये चतुर्थ्यां वरुणाश्रये ।
On the fourteenth she is north-west, on the fourth west and on the bright eighth south. Avoid the eleventh.
रौद्रश्चैव तथा श्वेतो मैत्रः सारभटस्तथा ।
This lists the first eight named parts of the day.
रावणो विजयश्चैव नन्दी वरुण एव च ।
Seven more names complete the fifteen named parts of the day.