At the beginning of winter, there is a ceremony known as the Odana Sasthi. This ceremony indicates that from that day forward, a winter covering should be given to Lord Jagannatha. That covering is directly purchased from a weaver. According to the archana-marga, a cloth should first be washed to remove all the starch, and then it can be used to cover the Lord. On this occasion by the desire of Lord Jagannatha, His servants dress Him in new, starched clothes.
Chaitanya Charitamrita, Madhya Lila, 16.78

Sri Gaurasundara accompanied by all His devotees came to see Lord Jagannatha on Odana Sasthi. Musical bands with numerous instruments, mridangas, conch shells, bells, etc., echoed all around and the entire town wore a festive look. Their Lordships wore many different sets of clothes that day and the festival would last until the Makara-shankranti, in mid-January. Sri Gaurasundara and the Vaishnavas stayed late into the night, gripped in waves of ecstasy, seeing Sri Jagannatha's many changes of dress.

The Supreme Lord as the worshiper, Sri Krishna Chaitanya, worshiped Himself in His Deity form, Lord Jagannatha. Unless the Lord blesses one, one cannot fathom this divine, esoteric, mystery, which was now being played out. Upon the altar the Supreme Lord, Sri Jagannatha, in His wooden Deity form sat in yoga-asana while He, as the crest jewel of all sannyasis, steeped in the mellows of bhakti-yoga, Sri Krishna Chaitanya Mahaprabhu, came for His own darshana.

On the occasion of the Odana Sasthi festival, the Deities are colourfully dressed in the finest of silks and with beautiful golden jewellery inlaid with precious gems. Garlands, bracelets, and earrings all made from fragrant seasonal flowers further bedeck Their Lordships. Scented oils, incense, flowers, ghee-lamps, and the sixteen different items for special worship are offered to Lord Jagannatha. Grand and opulent offerings of prasadam are also made continually. Sri Gaurahari observed these festivities with His devotees and then feeling great joy and satisfaction returned home. Bidding farewell to all the Vaishnavas, the Lord sought the calm of solitude.
– Sri Chaitanya Bhagavata, Antya Khanda 10