Which completely misses culture-based time differences (depending on culture, in Europe, two neighboring countries in the same time zone may have 3 hours differ

Which completely misses culture-based time differences (depending on culture, in Europe, two neighboring countries in the same time zone may have 3 hours difference in usual working hours) and mismatched timezones (half a china has a timezone 5 hours off from their local time) Look at this map: https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Standard_World_Time_Zones.png/1920px-Standard_World_Time_Zones.png https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/St... the timezones already are all over the place. What you think of as 4:25 can be 9:25 or 23:25 thanks to timezone mismatches.