Template:Age in years and days

Instructions for {{Age in years and days}}

This template returns the number of full years and surplus days between two specified dates. If the second set of parameters is not included, it will return the number of full years and surplus days between a specified date and today's date. The two numbers are separated by a comma; the words "year" and "day" are plural when appropriate. The number table sorting template is included in the year value, so that values produced by this template will work properly in sortable lists.

Syntax

{{Age in years and days|yyyy|mm|dd}} or

{{Age in years and days|yyyy|mm|dd|yyyy2|mm2|dd2}}

Examples

{{Age in years and days|1989|07|23}} returns "&1000000000000003500000035 years, &10000000000000123000000123 days"

{{Age in years and days|1989|07|23|2003|07|24}} returns "&1000000000000001400000014 years, &100000000000000010000001 day"

Notes

This template does not check for incorrect input:

{{Age in years and days|1980|07|14|1993|06|233}} returns "&1000000000000001200000012 years, &10000000000000554000000554 days" (surplus days do not count as extra months)

{{Age in years and days|1980|07|14|1993|88|14}} returns "&1000000000000001300000013 years, &100000000000024710000002,471 days" (surplus months do not count as extra years)

Also note that due to leap years, the measure "years and days" fails to be fully additive. The following example is not an error, but each calculation uses a different definition of "year", either 365 days or 366:

{{Age in years and days|2007|02|27|2008|03|02}} returns "&100000000000000010000001 year, &100000000000000040000004 days"

but split up:

{{Age in years and days|2007|02|27|2007|03|02}} returns "&100000000000000000000000 years, &100000000000000030000003 days"

{{Age in years and days|2007|03|02|2008|03|02}} returns "&100000000000000010000001 year, &100000000000000000000000 days"

Use with caution on in-universe pages

Please note that this template, and really everything in category:age calculation templates should be used with caution on in-universe pages. They all assume that there is no year zero, which our in-universe rule on years does not. This is because there are several in-universe sources, not the least of which is the 1996 movie and its novelisation, which assume that there is a year zero. For ease of calculation, our in-universe time calculation templates, like {{timeline}}, are therefore based on a different principle than this one — namely, that year 0 does exist.

In practice, this means absolutely nothing to the calculation time of between two dates, so long as you're trying to figure out the distance between any two dates after 1/1/1 AD.

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