Template:YEAR/doc

Usage
Specify optional parameter to get soft error rather than a hard error

Reports "Error" if given bad input:

Reason for the error: there are not 14 months.

Reason for the error: no month has 61 days.

Reason for the error: there is no such month name.

Reason for the error: no date information to parse.

Reason for the error: includes extraneous content.

If used with a year range, it returns only the first match:

This presently only works when the year range is specified with a hyphen; if correctly given with an en dash, it reports an error (this will probably not be fixed, because handling ranges is not the template's function; that it kinda-sorta works on something like  with a hyphen is basically just an accident):

If used without input, it simply outputs the current year:



It can be cleanly substituted for this purpose. If fed invalid data when substituted, it produces a larger, red error.