When did Jason find the golden fleece?

Jason found the Golden Fleece during his quest with the Argonauts, which is a central event in Greek mythology. The journey took place after he was sent by King Pelias to retrieve the fleece from the kingdom of Colchis. With the help of the sorceress Medea, Jason successfully acquired the fleece, overcoming various challenges along the way. This adventure is primarily recounted in the ancient Greek epic "Argonautica" by Apollonius of Rhodes.