I feel Sunday is the start of the week because that's what I've been seeing on calendars my whole life. I do bundle Mon-Fri and Sat-Sun into "weekdays" and "wee

I feel Sunday is the start of the week because that's what I've been seeing on calendars my whole life. I do bundle Mon-Fri and Sat-Sun into "weekdays" and "weekend" in my head, but when I visualize a week in my head, it always starts on Sunday.