**Date format** is a way to represent a given date, usually textually.

= Some formats
* ISO one, the best one
* The European one with dots
* The American one with slashes
* The Japanese one with dots
* The Japanese one with hieros

= A date idea [[2022-10-05]]
join(sort-ascending(DD, MM, YY), "•")

So today is 05•10•22, which is not really exciting, but think about days like 23rd of May: 05•22•23.