Additionally, the second and third "date display type" are not common at all (to the point that they seem made-up). For common date formats check CLDR data: http://st.unicode.org/cldr-apps/v#/en/Gregorian/562f98c4c6b2...

Obviously, date formats are different for each locale; en-US: MM/DD/YYYY, en-GB: DD/MM/YYYY, de-DE: DD.MM.YYYY.