I think everyone should use ISO 8601.

And if you are using something else, especially if it’s something like XX-XX-XX, specify what you mean by that!

I prefer RFC3339, specifically:

> NOTE: ISO 8601 defines date and time separated by "T". Applications using this syntax may choose, for the sake of readability, to specify a full-date and full-time separated by (say) a space character.

I have a hard time getting that past non-technical users (in the US). People that don't think like an engineer. Even though we're right! Of course!

Plus, it sorts naturally.

Starting with the day or the month is Ludacris.

Day I can accept, even if I dislike it. Starting with the month will always make me angry. It just has no logic to it.

Sure it does. It's the shortest way to specify a date within a period of a year surrounding the current day... Which means it's a date format that should only ever be spoken, not committed to written record.

Month first is not even syntactically correct, even in spoken form, in some languages.