two approaches have a significance:
yyyy/mm/dd - > the least confused for the history and data processing
dd/mm/yyyy - > most usable by human:
- If I say: 15th, it's the 15th of the month
- If I say: 15/10, it's the 15th of the month 10 of this year
This is why 6,1 billion people chose this syntax.
mm/dd/yyyy is really non-sense created by a confused shorty language.
Jerome (french)