A "birth date" is the specific day, month, and year when a person is born. It is an important piece of information that helps identify individuals and is often used in legal documents, such as birth certificates and identification cards. The birth date can also be used to calculate a person's age, which is relevant in various contexts, including eligibility for certain activities or benefits. In many cultures, a person's birth date is celebrated annually with a birthday party. This celebration often includes traditions such as cake, gifts, and gatherings with family and friends. Additionally, some people believe that a person's birth date can influence their personality traits and life path, leading to the practice of astrology.