Who should perform Shradh on Ekadashi?

Anyone whose ancestor (parent, grandparent, or any paternal or maternal relative) passed away on Ekadashi Tithi — the 11th day of any lunar month — should perform their Shradh on Ekadashi Shradh day during Pitru Paksha. If you are unsure of the exact tithi, perform Shradh on Sarva Pitru Amavasya (October 10, 2026).