Very interesting. So I actually didn’t know until recently that 24-hour format is in fact the most common time format in the world. Apparently my school didn’t provide a reasonably international perspective on this point, focusing rather exclusively on local time standards in this regard.
20180810/https://en.wikipedia.org/wiki/24-hour_clock
20180810/https://en.wikipedia.org/wiki/ISO_8601
20180810/https://en.wikipedia.org/wiki/Common_Locale_Data_Repository
20180810/https://en.wikipedia.org/wiki/Date_and_time_representation_by_country