The cardinals will first celebrate the “Mass for the Election of the Roman Pontiff” in St. Peter’s Basilica that morning before processing into the Sistine Chapel May 7.
catholicreview.org
Conclave to elect next pope will begin May 7 - Catholic Review
The 135 cardinals eligible to elect the next pope will enter the Sistine Chapel to begin the conclave May 7, the Vatican announced.
