How long does the puja take at Trimbakeshwar?

A complete Kaal Sarp Dosh Puja takes 4 to 6 hours for the full six-stage vidhi: Kushavarta Kund snan (30-45 min), Sankalp + Ganesh + Kalash (45-60 min), Navgraha Puja (45 min), Nag Devata worship (45 min), havan with 108+ Rahu-Ketu ahutis each (60-90 min), Pind Daan (30 min), and Rudrabhishek + immersion (45-60 min). Shorter versions without havan take about 90 minutes but are not the complete traditional vidhi.