1957 Buddha Statue

Does anyone know when in 1957 this occurred? What month and day?

(But in 1957, when the image was being moved to a new temple in Bangkok, it slipped from a crane and was left in the mud by workmen. In the morning, a temple monk, who had dreamed that the statue was divinely inspired, went to see the Buddha image. Through a crack in the plaster he saw a glint of yellow, and discovered that the statue was pure gold.)