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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.
Remember that you can conduct experiments, and should test all improvements, in either the general Template sandbox or your user space before changing anything here. |
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".
Examples
If, for example, a reference dated July 4, 2023 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 |2023|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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| Template code | Result
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| {{birth based on age as of date | 50 | 2023 | 11 | 25}}
| 1972/1973 (51 сола)
| | {{birth based on age as of date | 50 | 2023 | ноябр | 25}}
| 1972/1973 (Хатои ибора: Амалгари ғайримунтазири <–Хатои ибора: Амалгари ғайримунтазири < сола)
| | {{birth based on age as of date | 50 | 2023 | 12 | 31}}
| 1972/1973 (50–51 сола)
| | {{birth based on age as of date | 50 | 2023 | Jan | 1}}
| 1972/1973 (51–52 сола)
| | {{birth based on age as of date | 50 | 2023 | 12 | 31 | noage=1}}
| 1972/1973
| | {{birth based on age as of date | 50 | 2023 | Jan | 1 | noage=1}}
| 1972/1973
| | {{birth based on age as of date | 50 | 2023 | ноябр}}
| 1972/1973 (Хатои ибора: Амалгари ғайримунтазири <–Хатои ибора: Амалгари ғайримунтазири < сола)
| | {{birth based on age as of date | 50 | 2023 | Jan}}
| 1972/1973 (51–52 сола)
| | {{birth based on age as of date | 50 | 2023 | 12}}
| 1972/1973 (50–51 сола)
| | {{birth based on age as of date | 50 | 2023}}
| 1972/1973 (50–52 сола)
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 Birth, death and age templates |
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Birth, death, age |
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| Template | Description / use
| | {{BirthDeathAge}} | Combines functions of {{birth date}}, {{birth-date}}, {{birth date and age}}, {{birth year and age}}, {{death date}}, {{death-date}}, {{death date and age}} and {death year and age}}.
| | {{birth date}} | To display a birth date and related hidden metadata.
| | {{birth-date}} |
| | {{birth date and age}} | {{birth date}} with suffix "(age N)".
| | {{birth date and age2}} | {{birth date and age}} plus age as of a specified date.
| | {{birth-date and age}} | As {{birth date and age}} but accepts dates in text form ("15 June 1950", "June 15, 1950", "June 1950", etc).
| | {{birth year and age}} | Year of birth and approximate age.
| | {{Birth based on age as of date}} | To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person).
| | {{Birth date based on age at death}} | To display approximate birth year based on age at death.
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Age only |
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| Template | Description / use
| | {{age}} | Age based on number of complete years between two dates.
| | {{age nts}} | {{age}} with output formatted for use in sortable tables.
| | {{age as of date}} | Current age (in years) from a known age at a specified date.
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