{{Birth-date and age}} displays a person’s birth date and age. Besides calculating the age of the person, the benefit of using this template is to allow for the inclusion of hidden microformat dates, which may be indexed or searched by software tools.

Note: The template may not calculate the age correctly if a full date (month, day, year) is not provided. For example, a person who was born in 1941 could be either 82 or 83, depending on whether they have reached their birthday in the current year:

{{Birth-date and age|1941}} → 1941 (1941) (yoshi 83)
{{Birth-date and age|dekabr 1941}} → Not recognized as a date. Years must have 4 digits (use leading zeros for years < 1000). (yoshi Expression error: Unexpected < operator.)

When only the year is known, consider using {{Birth year and age}} instead:

{{Birth year and age|1941}} → 1941 (yoshi 82–83)
{{Birth year and age|1941|12}} → dekabr 1941 (yoshi 82–83)
Format
{{Birth-date and age| birth date }}
{{Birth-date and age| birth date | wikitext to display in place of 'birth date'. Like the right hand parameter in a wikilink, this could be alternate text, links, templates etc. }}

hCard microformat

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This template also returns the date, hidden by CSS, in the ISO 8601 standard.[1] [2] 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). Because the ISO 8601 standard requires the Gregorian calendar, this template should not be used if the date is given in the Julian calendar.

For further information, visit the microformats project.

Examples

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Examples of {{Birth-date and age}} (colors for emphasis only)
Month first format: Sample below displays April 12, 1941 (1941-04-12) (yoshi 83), with invisible microformat date: 1941-04-12
{{Birth-date and age|April 12, 1941}}
Day first format: Sample below displays 12 April 1941 (1941-04-12) (yoshi 83), with invisible microformat date: 1941-04-12
{{Birth-date and age|12 April 1941}}
Year only, year and month only: Sample below displays 1941 (1941) (yoshi 83), with invisible microformat date: 1941
{{Birth-date and age|1941}}
Demo of ISO date, as well as alternate displays. Sample below displays Twelfth of April, 1941 (1941-04-12) (yoshi 83), with invisible microformat date: 1941-04-12
{{Birth-date and age|1941-04-12|Twelfth of April, 1941}}

Microformat output

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Birth date and age templates: Lua xatosi in package.lua at line 80: module 'Module:Template test case/data' not found. Lua xatosi in package.lua at line 80: module 'Module:Template test case/data' not found.

Parameters

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{{birth-date and age|birth date|additional parameters}}
Parameter Default
(required) 1 Birth date. May be year only, year and month, year month and day, expressed in natural formats: e.g.: 24 August 1953, 1955-08-25, Sunday, December 7, 1941. If parameter three is not specified, the birth date is displayed in exactly this format. This value as well as parameter 2 may not include links. If links or templates that do not evaluate as recognizable dates are desired, use parameter 2.
(optional) 2 The birth date to display. This may include links or templates, or any combination of them, and overrides parameter 1. parm 1
(optional) bce If birth date is BC, set to "b".
(optional) gregorian If Julian date is used, this parameter is required. The date provided is used for emitting the correct microformat translation of the birth date. parm 1
(optional) dt This value if present is the ISO8601 value emitted to indicate microformat birth date. It overrides any calculated value.

Supporting templates

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Alternative template

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Tracking categories

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See also

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  1. „Date Design Pattern“. Microformats Wiki (2013-yil 7-aprel).
  2. „hCalendar closed issues“. Microformats Wiki (2009-yil 28-avgust). Specifically rejects supporting the Julian calendar.