View source for Template:Age as of date/doc

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== Usage ==
This template calculates a person's current age based on a known age as of specified date. This is useful when a reference states a person's age at the time of the reference's publication.

{{tlx|Age as of date|age|year|month|day}}

The age, year, and day must be supplied as [[natural number]]s; month can be specified as a natural number as well as by name or abbreviation (e.g. "August" or "Aug").  The [[Gregorian calendar]] is assumed, with no special support provided for [[dual dating]] or the difference between [[Old Style and New Style dates]] .

If a reference dated July 4, {{#expr: {{CURRENTYEAR}} - 2}} mentions that someone is 50 years old, that person's current age can be rendered using:

{{tlx|Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|July|4}}

== Examples ==
{| class="wikitable"
! Template text
! Result
|-
| align=left | <tt><nowiki>{{Age as of date|50|</nowiki>{{#expr: {{CURRENTYEAR}} - 2}}|1|1}}</tt>
| align=center | {{Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|1|1}}
|-
| align=left | <tt><nowiki>{{Age as of date|50|</nowiki>{{#expr: {{CURRENTYEAR}} - 2}}|12|31}}</tt>
| align=center | {{Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|12|31}}
|-
| align=left | <tt><nowiki>{{Age as of date|50|</nowiki>{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTH}}|{{CURRENTDAY}}}}</tt>
| align=center | {{Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTH}}|{{CURRENTDAY}}}}
|-
| align=left | <tt><nowiki>{{Age as of date|50|</nowiki>{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTHABBREV}}|{{CURRENTDAY}}}}</tt>
| align=center | {{Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTHABBREV}}|{{CURRENTDAY}}}}
|-
| align=left | <tt><nowiki>{{Age as of date|50|</nowiki>{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTHNAME}}|{{CURRENTDAY}}}}</tt>
| align=center | {{Age as of date|50|{{#expr: {{CURRENTYEAR}} - 2}}|{{CURRENTMONTHNAME}}|{{CURRENTDAY}}}}
|}

== See also ==
* {{tl|Birth based on age as of date}} — uses same calculations for current age, but also includes an approximate year of birth 
* {{tl|Age}} — calculates an age based on the number of full years between two specified dates (or a specified date and today's date) 
* {{tl|Age nts}} — similar to the above, but will sort correctly in sortable tables
* {{tl|Age in years and days}} — Age in years and days
* {{tl|Age in days}} — Age in days
* [[Wikipedia:Age calculation templates]]
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[[Category:Date mathematics templates|{{PAGENAME}}]]
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