Looks like the answer has to do with the predominant religion in the area (if any)
Most of Europe and China consider Monday the first day of the (work) week, while North America, Israel, South Asia, and many Catholic and Protestant countries, consider Sunday the first day of the week, while Saturday is judged as the first day of the week in much of the Middle East (Israel excepted) and North Africa due to the Islamic influence.
Iirc most countries consider Monday the beginning of the week and Sunday the end of the week, hence the term “weekend”
TIL, in the UK we seem to see Sunday as the first day of the week, but under ISO it’s monday. Interesting.
Looks like the answer has to do with the predominant religion in the area (if any)
Monday is the first day of the work week. Seems to be on whether or not you centre your life around work or God 🤣