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This is the template sandbox page for Template:Death date and age (diff). See also the companion subpage for test cases.

This template is used on approximately 433,000 pages, or roughly 1% 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.

Do NOT use this template when the person's exact date of death is disputed or unknown; consider {{death year and age}} instead.

• {{dda}}

This template uses Lua: Module:Age (sandbox)

This template returns a person's date of death and age at that date. The year, month, and day of death are required, as is the birth year. The month and day of birth are optional.

Syntax

To display the death date with age

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

Formats

{{death date and age|yyyy|mm|dd|yyyy|mm|dd|df=yes}}

{{death date and age|yyyy|mm|dd|yyyy|mm|dd|mf=yes}}

Examples when all parameters are known

{{death date and age|1993|2|24|1921|4|12|df=yes}} returns:  24 February 1993(1993-02-24) (aged 71)

{{death date and age|1993|2|24|1921|4|12|mf=yes}} returns:  February 24, 1993(1993-02-24) (aged 71)

Examples when only death-related parameters are known

{{death date and age|1993|2|24|1921|4|df=yes}} returns:  24 February 1993(1993-02-24) (aged 71)

{{death date and age|1993|2|24|1921|mf=yes}} returns:  February 24, 1993(1993-02-24) (aged 71–72)

When the exact birth date is unknown, the template will calculate the age at death and provide a range of two possible ages, if necessary.

The template will generate an error when required parameters are left blank, or when parameters are invalid. Examples of invalid parameters include impossible human ages, months greater than 12 or less than 1, days greater than 31 or less than 1, and parameters in the wrong order.

"day first" (df) and "month first" options

The df (day first) parameter indicates the intended date format to display. It is switched on by setting it to "y" or "yes" e.g. df=yes or df=y.

The default output of this template is the month before the day (American-based style). This default may not be appropriate in articles about people from parts of the world where the day precedes the month in a date (e.g. Europe). In such cases the parameter df should be set.

It is possible to use similar parameter "mf" to stress the month-first format so that relying on the default does not lead an editor or bot to change the format to an unintended value; however, it is ignored by the template itself. (So, should both parameters be mistakenly used at once, df takes precedence.)

Examples:

{{death date and age|1993|2|24|1921|4|12|df=yes}} displays  "24 February 1993(1993-02-24) (aged 71)"

{{death date and age|1993|2|24|1921|4|12|mf=yes}} displays  "February 24, 1993(1993-02-24) (aged 71)"

Alternate template when specific birth date is unknown

When only the year of a person's death is known, or if it is desired not to state a person's full dates of birth and death (e.g. for privacy), use the template {{death year and age}} instead. See below for other templates that perform similar functions.

FAQ

• Q: Why don't these templates add categories such as "Births in " to articles where they are used?

A: Because they are sometimes used for dates in lists of people (e.g. members of sports teams).

Background

The idea of using the template, as with {{birth date and age}} etc., is to allow for the inclusion of hidden metadata to be used, indexed or searched by software tools. However, as of October 2008 this template does not include any such metadata and never has since it was founded in December 2006. The apparent reason is that the hCard microformat, logically enough for an extension of "standard for electronic business cards", contains only "BDAY" field but nothing to do with a death. It is unclear when metadata standard for the dead will be developed and adopted. Until then, the template does nothing but format the input parameters.

Because the hCard specification requires the use of the Gregorian calendar, the template should not be used for dates stated in the Julian calendar.

TemplateData

TemplateData for Death date and age

See also

• {{Birth-date}} which accepts formats like "1 April 1990" or "April 1, 1990"
• {{Birth date and age}} or {{Birth-date and age}}
• {{Death year and age}}
• {{Recent birth}} or {{Recent death}}
• {{Death date and given age}}, helpful when death date and age is known, but not the exact birth date

• Template sandboxes