Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · War Astrology: Yogas, Nakshatras
युद्धजयार्णवः (योगाः नक्षत्राणि)
चतुर्दश्यां तु वायव्ये चतुर्थ्यां वरुणाश्रये ।शुक्लाष्टम्यां दक्षिणे च एकादश्यां भृशं त्यजेत् ॥ १४ ॥
In the full Agni Purana this is chapter 123, verse 14.
On the fourteenth she is in the north-west. On the fourth she is in the west. On the bright eighth she is in the south. On the eleventh, avoid it strongly.
Simple meaning: 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.
रौद्रे रौद्राणि कुर्वीत श्वेते स्नानादिकं चरेत् ।
Each named part of the day suits its own work, such as harsh work, bathing and marriage.