Fyrimynd:Birth based on age as of date

Documentation icon Skjalfesting til fyrimyndina[vís] [rætta] [søga] [dagfør]

This template calculates the birth year and current age based on the age as of a date. This is useful when a reference states only their age at the time of the reference's publication.

SyntaxRætta

 {{birth based on age as of date |age |year|month|day}} 

The age, year, and day must be supplied as natural numbers; month can be specified as a natural number as well as by name or abbreviation (e.g. "August" or "Aug"). The Gregorian calendar is assumed, with no special support provided for dual dating or the difference between Old Style and New Style dates.

If they are not known, the "day" and "month" fields can be omitted; this is useful if, for example, only the publication year for a source is known.

OptionsRætta

To suppress the age field:

 {{birth based on age as of date |age |year|month|day |noage=1}} 

With the "noage=1" option, the month and day can be "1".

ExamplesRætta

If, for example, a reference dated July 4, 2019 mentions that someone is 50 years old, that person's birth year and age can be rendered using:

{{birth based on age as of date |50 |2019|July|4}}

The following examples are for a person reported as being 50 years old in 2019

Template code Result
{{birth based on age as of date5020190328}} 1968/1969 (age 51)
{{birth based on age as of date502019mars28}} 1968/1969 (age Feilur í málbering: Óvæntaður < operatorur.Feilur í málbering: Óvæntaður < operatorur.)
{{birth based on age as of date5020191231}} 1968/1969 (age 50–51)
{{birth based on age as of date502019Jan1}} 1968/1969 (age 51–52)
{{birth based on age as of date5020191231noage=1}} 1968/1969
{{birth based on age as of date502019Jan1noage=1}} 1968/1969
{{birth based on age as of date502019mars}} 1968/1969 (age Feilur í málbering: Óvæntaður < operatorur.Feilur í málbering: Óvæntaður < operatorur.)
{{birth based on age as of date502019Jan}} 1968/1969 (age 51–52)
{{birth based on age as of date50201912}} 1968/1969 (age 50–51)
{{birth based on age as of date502019}} 1968/1969 (age 50–52)