A question asked was specifically how to change the Time/Date display format from the English (US) format MM-DD-YYYY to the ISO8601(?) format YYYY-MM-DD. It was recommended to select a different version of English, like English (UK), in Settings>Languages and that might work. The original questioner tried that and discovered that English (UK) gave a more useful format but not the standard format desired. This post is to confirm that selecting English (Canada) will produce the date/time display format desired (YYYY-MM-DD).
I cannot post a direct reply to the original question because I don’t have sufficient reputation (?). Perhaps a mod can move this to the appropriate thread once it has been reviewed and found harmless and inoffensive?
...ken...