Cardinal electors in the 2013 conclave

The papal conclave of 2013 was convened to elect a pope, the leader of the Catholic Church, to succeed Benedict XVI following his resignation on 28 February 2013. In accordance with the apostolic constitution Universi Dominici gregis, which governed the vacancy of the Holy See, only cardinals who had not passed their 80th birthday on the day on which the Holy See became vacant (in this case, those who were born on or after 28 February 1933) were eligible to participate in the conclave.

Source: Wikipedia — Cardinal electors in the 2013 conclave (CC BY-SA 4.0)