Template:YMD to ISO/doc

Any input which is not a valid DMY date is passed through unchanged. This template is designed to preprocess dates for use with the #time parser function, which is unable to convert YMD dates, and for use with templates such as Date or ISO date which are implemented using the #time parser function.

Used as input
With the parser function:
 * without {{}}:  →
 * without {{}}:  →

With the Date template:
 * → dmy
 * without {{}}:  → 2000 January 17 (not converted to dmy)

With the ISO date template:
 * without {{}}:  →
 * without {{}}:  →