A birthday is the anniversary of the birth of a person, or figuratively of an institution.

An anniversary is the date on which an event took place or an institution was founded in a previous year, and may also refer to the commemoration or celebration of that event.

Birth, also known as parturition, is the act or process of bearing or bringing forth offspring.

Institutions are "stable, valued, recurring patterns of behavior".

Birthdays by Domics


Birthdays of people are celebrated in numerous cultures, often with birthday gifts, birthday cards, a birthday party, or a rite of passage.

A party is a gathering of people who have been invited by a host for the purposes of socializing, conversation, recreation, or as part of a festival or other commemoration of a special occasion.

A rite of passage is a ceremony or ritual of the passage which occurs when an individual leaves one group to enter another.

A gift or a present is an item given to someone without the expectation of payment or anything in return.

Annie and Hayley LeBlanc - Guess Their Age by Famous Birthdays


Many religions celebrate the birth of their founders or religious figures with special holidays.

A holiday is a day set aside by custom or by law on which normal activities, especially business or work, are suspended or reduced.


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.

February is the second and shortest month of the year in the Julian and Gregorian calendar with 28 days in common years and 29 days in leap years, with the quadrennial 29th day being called the leap day.

February 29, also known as leap day or leap year day, is a date added to most years that are divisible by 4, such as 2016, 2020, and 2024.

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