Yes, many atheist celebrate Christmas in a secular way. While they may not believe in the religious meaning behind the holiday, they may still enjoy the traditions and festivities associated with it, such as spending time with loved ones, exchanging gifts, and decorating. Some atheist may also celebrate the season as a time of generosity and kindness, without necessarily believing in the religious aspects of the holiday. It's important to note that there is no one way to celebrate Christmas, and everyone is free to observe it in their own way.