ISO8601. Breathe it, live it, be it. That's yyyy-mm-dd. yyyy/mm/dd is ambiguous because the slash-separator is shared across all conflicting formats. Dashes ar

ISO8601. Breathe it, live it, be it. That's yyyy-mm-dd. yyyy/mm/dd is ambiguous because the slash-separator is shared across all conflicting formats. Dashes are pretty much always ISO compliant formats. (Yes, it's a small difference, but it helps)