The Snana Yatra, also spelt Snana Jatra, is a bathing festival of deities celebrated on the purnima of the Hindu month of Jyeshtha. It is the auspicious birthday of Jagannath. It is an important festival for Hindus. From Wikipedia
Following the June 11 rituals, the deities will remain in isolation until June 26 while temple authorities finalize chariot construction, security, logistics for the Rath Yatra