How long does the Kaal Sarp Dosh Puja take in Ujjain?

A complete Kaal Sarp Dosh Puja at Ujjain takes three to five hours for the full vidhi including Shipra River snan, Ganesh Sthapana, Navgraha invocation, Nag Devta worship, Mahamrityunjaya Havan, Rudrabhishek at the Shiva Linga, and final immersion at the Shipra. An abbreviated puja without the full havan can be completed in two hours. Plan for a full morning — starting at 6:00 AM and finishing by 11:00 AM is typical.