Template:Birth-date_and_age

Template:Birth-date and age

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This template is used on approximately 13,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.

This template uses Lua:

Module:Check for unknown parameters (sandbox)

{{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 (age 83)

{{Birth-date and age|May 1941}} → May 1941 (age 83)

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

{{Birth year and age|1941}} → 1941 (age 82–83)

{{Birth year and age|1941|5}} → May 1941 (age 82–83)

The above documentation is transcluded from Template:Birth-date and age/doc.
Editors can experiment in this template's sandbox and testcases pages.
Add categories to the /doc subpage. Subpages of this template.

[1]
"Date Design Pattern". Microformats Wiki. April 7, 2013.
[2]
"hCalendar closed issues". Microformats Wiki. August 28, 2009. Specifically rejects supporting the Julian calendar.

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This article uses material from the Wikipedia article Template:Birth-date_and_age, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.

[1] [1]
"Date Design Pattern". Microformats Wiki. April 7, 2013.

[2] [2]
"hCalendar closed issues". Microformats Wiki. August 28, 2009. Specifically rejects supporting the Julian calendar.

[1]

[2]

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.	–

Template:Birth-date_and_age

Template:Birth-date and age

Usage

hCard microformat

Examples

Microformat output

Parameters

Supporting templates

Alternative template

Tracking categories

See also

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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) (age 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) (age 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) (age 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) (age 83), with invisible microformat date: 1941-04-12 `{{Birth-date and age\|1941-04-12\|Twelfth of April, 1941}}`