devtrackers.gg
Americans and Europeans may disagree on which way is best to represent the date. But yy/mm/dd is certainly something we can agree is the worst way.
Well, most other ways of writing the date would have been too obvious. I initially had it as 20050426, but the 2005 at the start made it feel much more obviously a date, so I shortened it down to a 2-digit year. I'm surprised someone actually made the connection.