To perform Abhishek for Ketu, conduct the ritual on Tuesday during Ashwini, Magha, or Mula Nakshatra. Place a Ketu idol or yantra, offer black sesame seeds, grey flowers, and kusha grass. Bathe the deity with milk, curd, honey, ghee, and gangajal while chanting "Om Kem Ketave Namah" 108 times. Complete with camphor aarti and distribute prasad containing black sesame. 

Ketu ki Abhishek ke liye Mangalvar ya Ketu Nakshatra (Ashwini, Magha, Mula) ka din shubh hota hai. Kaale til, grey phool aur kusha grass chadhayen. "Om Kem Ketave Namah" ka 108 baar jaap karein. Yeh puja moksha praapti, spiritual growth aur past karma sudhaarne ke liye karein. 

Ketu Abhishek becomes essential during specific astrological conditions. When Ketu Mahadasha or Antardasha creates confusion, spiritual disconnection, or unexpected losses, this ritual provides relief. If Ketu occupies 6th, 8th, or 12th house causing health issues or foreign land problems, Abhishek helps. When Ketu afflicts Moon causing mental unrest and anxiety, or during Ketu-Rahu axis transit affecting your natal chart adversely, this puja becomes necessary. Additionally, when seeking moksha, spiritual awakening, or liberation from past karma bondage, Ketu Abhishek accelerates the journey.