What day did leanrdo paint the mons Lisa?

Leonardo da vinci is believed to have started painting The Mona Lisa in 1503 and continued working on it until around 1506, with some sources suggesting he may have made refinements until 1517. The exact day is not recorded, but it is widely accepted that he painted it during the Italian Renaissance period. The painting is famous for its intricate details and the enigmatic expression of the subject.