| Calculation [ ] There are two ways to calculate half-birthdays | Popular culture [ ] At least three children's books have been written about half-birthdays:• The more precise method is to add or subtract half the number of days in a year to the birth date |
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| The federal government defines the half-year as being "six calendar months" after the anniversary of birth, regardless of what day of the month this produces | The easier but potentially less precise method is to take the number of the date of the birthday and advance the month by six: e |
In leap years, the number of days would be 183.
19| In the case of a common year, this would be 182 | Because not all months have the same number of days, this method does not always work — for example, six months after an August 30 birthday would be , which is nonexistent in the |
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| He brought gelato to every birthday | Which all three of these kids now think is an actual thing |
As she defined the term, it is sometimes marked by people whose falls near major holidays, the celebration of which may overshadow celebration of the birthday.
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