Template:Birth date and age

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The {{Birth date}} and {{Birth date and age}} templates will return a person’s date of birth and optionally his/her age. They have the shortcuts {{dob}} and {{bda}}, respectively.

Using this template rather than simply inserting the date into articles allows for the inclusion of hidden metadata about the date. This metadata can be used by web browsers and other software tools to extract the details, and display them using some other website or mapping tool, index or search them.

Syntax

To display the birth date only

{{Birth date|year of birth|month of birth|day of birth|additional parameters}}

Do not use with non-Gregorian dates because the resulting hCard hidden date will be false.

{{dob}} is a redirect to {{Birth date}}

{{dob|year of birth|month of birth|day of birth|additional parameters}}

To display a birth date with calculated age

{{Birth date and age|year of birth|month of birth|day of birth|additional parameters}}

This form is only intended for living persons. In the rare case that a living person's birth date is given in a non-Gregorian calendar this template should not be used. The parameter names 'year', 'month', and 'day' can be used instead of the first, second, and third parameters for 'Birth date and age' only. These parameter names are not available for the 'Birth date' template.

{{Bda}} is a redirect to {{Birth date and age}}

{{Bda|year of birth|month of birth|day of birth|additional parameters}}

Examples:

{{Birth date|1993|2|4|df=yes}} returns "(1993-02-04)4 February 1993"
{{Birth date|1993|2|4|mf=yes}} returns "(1993-02-04)February 4, 1993"
{{Birth date|1993|2|4}} returns "(1993-02-04)February 4, 1993"
{{Birth date|1993|2|24|df=yes}} returns "(1993-02-24)24 February 1993"
{{Birth date|1993|2|24|mf=yes}} returns "(1993-02-24)February 24, 1993"
{{Birth date|1993|2|24}} returns "(1993-02-24)February 24, 1993"
{{Birth date and age|1993|2|4|df=yes}} returns (1993-02-04) 4 February 1993 (age 31)
{{Birth date and age|1993|2|4|mf=yes}} returns (1993-02-04) February 4, 1993 (age 31)
{{Birth date and age|1993|2|4}} returns (1993-02-04) February 4, 1993 (age 31)
{{Birth date and age|1993|2|24|df=yes}} returns (1993-02-24) 24 February 1993 (age 31)
{{Birth date and age|1993|2|24|mf=yes}} returns (1993-02-24) February 24, 1993 (age 31)
{{Birth date and age|1993|2|24}} returns (1993-02-24) February 24, 1993 (age 31)

Month First (mf) and Day First (df) options

The df (day first) and mf (month first) parameters indicate the intended date format to display. The appropriate parameter should be set to "y" or "yes" e.g. df=yes or mf=y.

The default output of this template is to display the month before the day. This default may not be appropriate for articles about people from parts of the world where the day precedes the month in a date. In such articles the parameter, "df", should be set to display the day before the month.

The parameter "mf", while not actually used by the template, will indicate that month first format is intended. Using these parameters can assist bots or other automated processing to detect which date format is intended; leaving the format as default may lead an editor or bot to change the format to an unintended value.

Do not specify both "df" and "mf" parameters in the same use of the template, as these formats are mutually exclusive.

Examples:

{{Birth date|1993|2|24|df=yes}} displays "(1993-02-24)24 February 1993".
{{Birth date and age|1993|2|24|df=yes}} displays " (1993-02-24) 24 February 1993 (age 31)".
{{Birth date|1993|2|24|mf=yes}} displays "(1993-02-24)February 24, 1993".
{{Birth date and age|1993|2|24|mf=yes}} displays " (1993-02-24) February 24, 1993 (age 31)".

hCard microformat

The templates also returns the date, hidden by CSS, in the ISO 8601 format (but not necessarily to the ISO 8601 standard) needed by hCard microformats. for example:

(<span class="bday">1993-02-24</span>)

Note: for the "foundation", "built" and similar set-up dates of companies, buildings, etc., use {{Start date}} (this will work for year-only or month-year dates).

See the microformats project for details.

Notes

When only the year of a person's birth and/or death are known, or if it is desired not to state a person's full dates of birth and death for privacy reasons, use the templates {{Birth year and age}} and {{Death year and age}} instead.

Note: The template will appear broken when the parameters are left blank (as seen above).

Note: Do not use this template inside of the Persondata template, as it can interfere with data extraction.

Template data

This is the TemplateData documentation for this template used by VisualEditor and other tools.

Birth date and age

This template returns a living person's date of birth and current age.

Template parameters

ParameterDescriptionTypeStatus
Year of birth1

The year in which the person was born

Numberrequired
Month of birth2

The month (number) in which the person was born

Numberrequired
Day of birth3

The day (number) in which the person was born

Numberrequired
Day firstdf

When set to 'y' or 'yes', the date of birth is output in a DMY format

Stringoptional
Month firstmf

When set to 'y' or 'yes', stresses that the default MDY date format is intended for the date of birth

Stringoptional

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



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