On 11 February 2013, the Vatican confirmed that Benedict XVI would resign the papacy on 28 February 2013, as a result of his advanced age, becoming the first pope to resign since Gregory XII in 1415. At the age of 85 years and 318 days on the effective date of his retirement, he was the fourth-oldest person to hold the office of pope. The move was unexpected. In modern times, all popes have held office until death. Benedict was the first pope to resign without external pressure since Celestine V in 1294.