Template:Birth based on age as of date/doc

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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.

Syntax

 {{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.

Options

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".

To replace the '/' separator with ' or ' in compliance with WP:APPROXDATE, add |mos=1

{{birth based on age as of date|50 |2018|11|18|mos=1}}
1967 or 1968 (age 51)

Examples

If, for example, a reference dated July 4, 2018 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 |2018|July|4}}

The following examples are for a person reported as being 50 years old in 2018

Template code Result
{{birth based on age as of date|50|2018|11|18}} 1967/1968 (age 51)
{{birth based on age as of date|50|2018|November|18}} 1967/1968 (age 51)
{{birth based on age as of date|50|2018|12|31}} 1967/1968 (age 50–51)
{{birth based on age as of date|50|2018|Jan|1}} 1967/1968 (age 51–52)
{{birth based on age as of date|50|2018|12|31|noage=1}} 1967/1968
{{birth based on age as of date|50|2018|Jan|1|noage=1}} 1967/1968
{{birth based on age as of date|50|2018|November}} 1967/1968 (age 50–52)
{{birth based on age as of date|50|2018|Jan}} 1967/1968 (age 51–52)
{{birth based on age as of date|50|2018|12}} 1967/1968 (age 50–51)
{{birth based on age as of date|50|2018}} 1967/1968 (age 50–52)



This template calculates the birth year and current age based on the age as of a date.

Template parameters

This template prefers inline formatting of parameters.

ParameterDescriptionTypeStatus
Age1

Age of subject at date of reference's publication.

Example
55
Numberrequired
Year2

Year of publication of reference.

Example
1950
Numberrequired
Month3

Month of publication of reference.

Example
8 or August
Stringsuggested
Day4

Day of publication of reference.

Example
21
Numbersuggested
MOS compliancemos

Set to a value of 1 to replace the '/' separator with ' or ' in compliance with [[WP:APPROXDATE]].

Example
1
Numberoptional
Hide agenoage

Set to a value of 1 to display year of birth without the age.

Example
1
Numberoptional