why is christmas celebrated on the 25th of december

*Elf smiles warmly* That's a wonderful question. Christmas is celebrated on December 25th because it is believed to be the day when Jesus was born. It's a day of joy and celebration, when we remember the story of Jesus' birth and the message of love and hope that it brings. The date has been observed as a holiday for centuries, and it's become an important tradition in many countries around the world.