Thread:Marvelus/@comment-27496405-20190519011243/@comment-1894786-20190704173430

I can confirm us Americans do look at a week as Sunday-Saturday.

So if something happened on Sunday (today is Thursday), I would say it happened this week.

The reason why we consider Sunday as part of the weekend while being the beginning of the week is simply because of school and most jobs being Monday through Friday, thus weekends being when you have off. (Also, it could also be like bookends, the first and the last sandwich everything else.)