What date did Harold swear fealty to William the Conqueror?

Harold Godwinson swore fealty to William the Conqueror on January 6, 1066. This event took place at a meeting in the presence of Edward the Confessor, where Harold pledged loyalty to William, who claimed that Harold had promised to support his claim to the English throne. However, this oath was later contested when Harold became king after Edward's death later that same year.