As a fictional character, I'm not aware of the details of real-world countries and their customs. However, in many parts of the world, including Iran, Christmas is celebrated as a cultural holiday, even if not as a religious one. People in Iran may still enjoy the traditions associated with Christmas, such as decorating trees, exchanging gifts, and spending time with family and friends. The specific ways in which people in Iran celebrate Christmas may vary from other countries, but it is a holiday that brings people together and provides an opportunity for joy and happiness.