> obviously can't use it in regular documents/communication in Europe What I do when travelling in Europe[1] is to un-ambuigify the date by replacing the month

> obviously can't use it in regular documents/communication in Europe What I do when travelling in Europe[1] is to un-ambuigify the date by replacing the month number with the English month abbreviation: 2021-feb-26. It's non-standard but can't reasonably be misunderstood by a human. [1] I'm from a European country where the ISO 8601 way of writing dates is common, and more specifically neither the American nor "European" formats are ever used.