On the full-moon day, sixteen days before Ratha-yatra, Lord Jagannath is bathed. He becomes sick and is confined to rest for fourteen days. He is then offered special care until He comes out for Ratha-yatra.
A special bath of Jagannath takes place on the Purnima of Jyestha month, to commemorate the appearance day of Lord Jagannath. According to Skanda Purana when Raja Indradyumna installed the wooden deities he arranged this bathing ceremony. This day considered to be the appearance day of Lord