In the Korean culture, we celebrate the 100th day of a child’s life. Why? Well, some say it’s to thank the child for living the full 100 days. Long ago when there wasn’t enough food and diseases that used to spread so fast, it was hard to keep a child alive for more than 100 days. So people would make a 100th day table full of goods and food for the GODs and thank them for keeping the child healthy.
Some say that it’s just to celebrate the child’s 100th day because 100 is a good solid number.
Other’s say it’s to give thanks and to wish for the child to live until he or she is 100.