MAIN Home Life Holidays & Observances Pi Day. Animation illustrating the concept of pi. Happy Pi Day! No, not National Pie Day. That's January 23. On this day, geeks go wild at the mere thought of celebrating pi  the ratio of a circles circumference to its diameter.
â¢ Surname is the family name or the last name of a person, whereas first name is the unique name given to a person at birth, also referred to as his Christian name.â¢ First name is the distinguishing feature of a person in his family, though his friends may lovingly refer to him with his surnames.urname. A surname is the fixed name or last name or family name that is common in the names of all family members, and is shared by all. This is very old, and no one in the family really knows about the origin of this name.
If your name follows our standards and you're still having trouble changing it, find out why. Other things to keep in mind: The name on your profile should be the name that your friends call you in everyday life. This name should also appear on an ID or document from our ID list. Nicknames can be used as a first or middle name if they're a variation of your authentic name (like Bob instead of Robert). You can also list another name on your account (example: maiden name, nickname, professional name). Profiles are for individual use only.