This is a proposal for an extended ISO date format. From the pains of my previous work experience, I saw, all other parts of the dates were quite unambigious, but when it came to month and date, the information is lost. There has to be some understood contract between parties to adhere to the formats. This is unnecessary. This date doesn't need to be widely used, but for b2b maybe, where we have to parse date from different vendors. Mostly none of the date formats deal with this. There is no way to tell 2016-01-02 is YYYY-MM-DD or YYYY-DD-MM
P.S. I took the help of GPT to fix the english in the draft.
