Epiphany is an “Aha!” moment. As a literary device, epiphany (pronounced ih-pif–uh-nee) is the moment when a character is suddenly struck with a life-changing realization which changes the rest of the story.

Epiphany is also known as 3 Kings Day …

It’s traditional to eat a special cake called ‘Rosca de Reyes’ (Three Kings Cake). A figure of Baby Jesus is hidden inside the cake. Whoever has the baby Jesus in their piece of cake is the ‘Godparent’ of Jesus for that year.
Epiphany, the Feast of The Three Kings – WhyChristmas.com