That’s a late 20th century invention, and not universally followed. Consider Unix time functions, which predate the ISO standard and follow what’s common practice in America even today, that Sunday is the first day of the week. Of course, Sunday was the first day of the week in Europe for over a thousand years and that practice has not fully been extinguished.
That’s a late 20th century invention, and not universally followed. Consider Unix time functions, which predate the ISO standard and follow what’s common practice in America even today, that Sunday is the first day of the week. Of course, Sunday was the first day of the week in Europe for over a thousand years and that practice has not fully been extinguished.