Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
एकद्व्यष्टद्वादशमः पाददृष्टिश्च तत्त्यजेत् ।दिनाधिपः प्रहरभाक्शेषा यामार्धभागिनः ॥ ७ ॥
In the full Agni Purana this is chapter 142, verse 7.
On the 1st, 2nd, 8th and 12th, his look is a quarter look. Avoid that too. The lord of the day takes one prahara (three-hour watch). Each of the rest takes half a yama (three-hour part of the day).
Simple meaning: Avoid Saturn's quarter look too. The day's lord rules three hours, each other planet an hour and a half.
शनिभागं त्यजेद्युद्धे दिनराहुं वदामि ते ।
In war, avoid Saturn's share. Rahu sits in a different direction each weekday: east on Sunday.
अग्नौ कुजे भवेत्सौम्ये स्थिते राहुर्बुधे सदा ।
Rahu's direction changes each weekday. Serpent Rahu moves round the corners, three hours in each.
वायौ संवेष्टयित्वा च शत्रुं हन्तीशसंमुखम् ।
Serpent Rahu circles and kills the enemy. At full moon, Tithi Rahu is in the south-east.