The 'last played' item in the singleplayer world selection screen shows dates in US format (month-day-year), even when UK English is selected as language.
Comments 3
This bug is still present on current IOS and Android. Devices locale settings are ignored, and US date format is used for listing last modification time on worlds.
US date format is only used in a very few countries, by a small proportion on the worlds population. Even in America, only the US use that format. If you want an international default then use the ANSI / ISO standard date format.
Confirmed for 1.12.2 (in the snapshot 1.13-pre8 its format is "day-month-year").