Vianney came to be known internationally, and people from distant places began travelling to consult him as early as 1827. "By 1855, the number of pilgrims had reached 20,000 a year. During the last ten years of his life, he spent 16 to 18 hours a day in the confessional. Even the bishop forbade him to attend the annual retreats of the diocesan clergy because of the souls awaiting him yonder". He spent at least 11 or 12 hours a day in the confessional during winter, and up to 16 in the summer.