A birthday is the anniversary of the birth of a person, or figuratively of an institution. Birthdays of people are celebrated in numerous cultures, often with birthday gifts, birthday cards, a birthday party, or a rite of passage. Many religions celebrate the birth of their founders or religious figures with special holidays. There is a distinction between birthday and birthdate: The former, other than February 29, occurs each year, while the latter is the exact date a person was born.

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