Idea Summary
When setting a format mask such as DD.MM.YYYY in a datepicker one is able to enter a date in exactly that format into the UI. However often it would be convenient to have multiple formats, e.g. DDMMYYYY or YYYY-MM-DD so that the user could use any of those

Use Case
Experienced users may prefer to not enter the dots, or multi-national-teams might prefer to have different separators to work.

Preferred Solution (Optional)
allow a “list” of format masks where the first one is used for display and the follow-up are tried in the order of entering for parsing until the first “non-error”.