"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 ...
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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 (e.g. Christmas, Mawlid, Buddha´s Birthday, and Krishna Janmashtami).
There is a distinction between birthday and birthdate: The former, other than February 29, occurs each year (e.g., January 15), while the latter is the exact date a person was born (e.g., January 15, 2001)." - (en.wikipedia.org 30.11.2019)
