A "Golden Birthday" occurs when a person turns the age that matches the day of the month they were born. For example, if someone was born on the 25th of a month, their Golden Birthday would be when they turn 25 years old. This celebration is considered special because it aligns the age with the birth date. Many people celebrate their Golden Birthday with parties, gifts, or special activities. It is a unique milestone that can be marked in various ways, making it a memorable occasion for the individual and their loved ones.