Template:Birth date and age
Template documentation| 40px | This template is used on 265,000+ pages, or roughly 3250% of all pages. To avoid major disruption and server load, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
| 40x40px | Do not use this template when the person’s exact date of birth is disputed or unknown. |
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 "4 February 1993"{{Birth date|1993|2|4|mf=yes}}returns "February 4, 1993"{{Birth date|1993|2|4}}returns "February 4, 1993"{{Birth date|1993|2|24|df=yes}}returns "24 February 1993"{{Birth date|1993|2|24|mf=yes}}returns "February 24, 1993"{{Birth date|1993|2|24}}returns "February 24, 1993"
{{Birth date and age|1993|2|4|df=yes}}returns 4 February 1993{{Birth date and age|1993|2|4|mf=yes}}returns February 4, 1993{{Birth date and age|1993|2|4}}returns February 4, 1993{{Birth date and age|1993|2|24|df=yes}}returns 24 February 1993{{Birth date and age|1993|2|24|mf=yes}}returns February 24, 1993{{Birth date and age|1993|2|24}}returns February 24, 1993
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 "24 February 1993".
{{Birth date and age|1993|2|24|df=yes}}displays "24 February 1993".
{{Birth date|1993|2|24|mf=yes}}displays "February 24, 1993".
{{Birth date and age|1993|2|24|mf=yes}}displays "February 24, 1993".
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
TemplateData for Birth date and age
<TemplateData> {
"description": "This template returns a living person's date of birth and current age.",
"params": {
"1": {
"label": "Year of birth",
"description": "The year in which the person was born",
"type": "number",
"aliases": ["year"],
"required": true
},
"2": {
"label": "Month of birth",
"description": "The month (number) in which the person was born",
"type": "number",
"aliases": ["month"],
"required": true
},
"3": {
"label": "Day of birth",
"description": "The day (number) in which the person was born",
"type": "number",
"aliases": ["day"],
"required": true
},
"df": {
"label": "Day first",
"description": "When set to 'y' or 'yes', the date of birth is output in a DMY format",
"type": "string",
"required": false
},
"mf": {
"label": "Month first",
"description": "When set to 'y' or 'yes', stresses that the default MDY date format is intended for the date of birth",
"type": "string",
"required": false
}
}
} </TemplateData>