The Epiphany takes place on January 6th, the day that the Magi went to visit baby Jesus. In France, the three wise men figurines are placed around baby Jesus in the stable. In the leading to January 6th the magi are either hidden or being moved gradually closer to the stable.
In a way to celebrate the epiphany the French make a cake called, la galette des rois, translated as cake of kings. In the cake they hide a figure inside of the cake and the person who gets the figure in their piece gets luck. This tradition dates back to the 14th century. In the tradition, the cake is divided so that each guest gets a piece and an extra just in case some unexpected person shows up.
Sources used: 1.http://www.livinglanguage.com/blog/2012/12/27/la-galette-des-rois-celebrating-the-feast-of-the-epiphany-in-france/ 2.https://frenchmoments.eu/epiphany-in-france-lepiphanie-en-franoce/ 3.http://www.livinglanguage.com/blog/2012/12/27/la-galette-des-rois-celebrating-the-feast-of-the-epiphany-in-france/