Template:Birth based on age as of date

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Usage

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 .

Options

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

For example, if a reference dated July 4, 2013 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|2013|July|4}}

The following examples use a date which is exactly one year before:
2 September 2014

Template text Result
{{Birth based on age as of date|50|2013|9|2}} 1962/1963 (age 51)
{{Birth based on age as of date|50|2013|September|2}} 1962/1963 (age 51)
{{Birth based on age as of date|50|2013|1|15}} 1962/1963 (age 51–52)
{{Birth based on age as of date|50|2013|Nov|5}} 1962/1963 (age 50–51)
{{Birth based on age as of date|50|2013|Nov|5|noage=1}} 1962/1963
{{Birth based on age as of date|50|2013|1|1|noage=1}} 1962/1963

See also

Birth, death, age
  • {{Birth date}} – displays the date and related hidden metadata
  • {{Birth date and age}} – same as {{Birth date}}, except that "(age ##)" appears after the birth date
  • {{Birth date and age2}} – displays birth date, plus age as of a specified date, "(aged ##)" appears after the birth date
  • {{Birth-date and age}} – display birth date and age, accepts dates as text (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}} – displays approximate birth year and current age; used when a dated reference mentions the age of a person as of the date of publication
  • {{Birth date based on age at death}} – displays approximate birth year based on age at death (useful if exact birth date is not known, but age at death is)
  • {{Death date}} – displays the date and related hidden metadata
  • {{Death date and age}} – same as {{Death date}}, except that "(aged ##)" appears after the death date
  • {{Death-date and age}} – display death date and age, accepts date as text (15 June 1950; June 15, 1950; June 1950; etc.)
  • {{Death date and given age}} – displays death date and specified age (useful if exact birth date is not known, but age at death is)
  • {{Death year and age}} – year of death and approximate age at death
Age only
  • {{Age}} – age based on the number of full years between two dates (or a specified date and current date)
  • {{Age nts}} – like {{Age}}, but sorts correctly in sortable tables
  • {{Age as of date}} – current age in years, based on a known age as of a specified date
  • {{Age in years and days}} – full years and days between two dates (or a specified date and current date)
  • {{Age in years and days textual version}} – for usage in text (uses "and" instead of the comma)
  • {{Age in years, months and days}} – full years, months and days between two dates (or a specified date and current date)
  • {{Age in days}} – age in days between two dates (or a specified date and current date)
  • {{Age in days nts}} – age in days; sorts correctly in sortable tables