I have a simple epaper dashboard project, which displays the time, date, weather and calendar entries. Of course the format is entirely specific to English, and I had naïvely assumed that everyone would understand “Friday Feb 17, 2023” and “5:20 PM”. When I received a feature request to display the preferred time format based on the system’s locale, I decided to apply it to the days and dates too, which sent me down a rabbit hole of locales, formats, and figuring out how to display...
