How many babies in this group are Christmas babies?

Esther • I’m better than horrible. EMT and Respiratory Therapist

My little guy was born on Christmas Day. (Due January 3rd but had a strong feeling it would be a December baby.) I know I have a good amount of time before I have to worry about making his birthday special, but I’m already so nervous. Some people say to celebrate their half birthday, but that seems strange to me and I feel like he would be confused on how old he was. Any other Christmas babies?