Template:Birth based on age as of date
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This template employs intricate features of template syntax.
You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages. You can conduct experiments, and should test all major changes, in either this template's sandbox, the general template sandbox, or your user space before changing anything here. |
For a person whose date of birth is unknown, this template estimates the person's birth year and current age based on a given age at a certain date. This is useful when a reliable source states only their age at the time of publication.
Syntax[kulemba source]
Typical use:[kulemba source]
{{birth based on age as of date | age | year | month | day }}
- Template:
{{birth based on age as of date|50|2022|9|23}}
- Result:
- 1971/1972 (age 51–52)
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.
Separator[kulemba source]
In contexts which are tight for space, the separator between the two possible years should be a slash: 1950/1951. Elsewhere it should be written out, as in: 1950 or 1951.
To use the / separator, add |slash=y (any value will work). To use or, in compliance with WP:APPROXDATE, add |mos=1.
- Template:
{{birth based on age as of date|50|2022|9|23|slash=y}}
- Result:
- 1971/1972 (age 51–52)
- Template:
{{birth based on age as of date|50|2022|9|23|mos=1}}
- Result:
- 1971 or 1972 (age 51–52)
No age[kulemba source]
To suppress the age field, set |noage=1:
- Template:
{{birth based on age as of date|50|2022|9|23|noage=1|slash=y}}
- Result:
- 1971/1972
With the |noage=1 option, the month and day can be "1".
Examples[kulemba source]
If, for example, a reference dated July 4, 2022 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|2022|July|4}}
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The following examples are for a person reported as being 50 years old in 2023 | ||||||||||||||||||||||
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This template calculates the birth year and current age based on the age as of a date.
| Parameter | Description | Type | Status | |
|---|---|---|---|---|
| Age | 1 | Age of subject at date of reference's publication.
| Number | required |
| Year | 2 | Year of publication of reference.
| Number | required |
| Month | 3 | Month of publication of reference.
| String | suggested |
| Day | 4 | Day of publication of reference.
| Number | suggested |
| MOS compliance | mos | Set to a value of 1 to replace the '/' separator with ' or ' in compliance with [[WP:APPROXDATE]].
| Number | optional |
| Hide age | noage | Set to a value of 1 to display year of birth without the age.
| Number | optional |