Sri Visvarupa Mahotsava
Today is a very sacred day in our line. Sri Caitanya Mahaprabhu took sannyasa and began to search for his brother Visvarupa. While searching, on this day He found out that he was in Pandarapur, and that he had left his body. He had taken samadhi on the bank of the river Bhima. Then, on this day, though Mahaprabhu was observing Caturmasya-vrata very strictly for four months, He shaved his hair. Before this year, He never shaved for these four months, nor did He cut his nails. He observed all the rules and regulations of Caturmasya.
It is said that Sankararanya was the sannyasa name of Srila Visvarupa, who was the elder brother of Visvambhara (the original name of Sri Caitanya Mahaprabhu). Sankararanya expired in 1432 Sakabda (A.D. 1510) at Sholapur, where there is a place of pilgrimage known as Pandarapura. This is referred to in the Madhya-lila, Chapter Nine, verses 299 and 300.
(Srila A.C. Bhaktivedanta Swami Prabhupada. Sri Chaitanya Charitamrita Adi-lila 10:106 purport.)