today, yesterday, tomorrow
The term 'Friday - Monday' means Friday through Monday(Friday, Saturday, Sunday, and Monday).
Sunday.
monday
Sunday
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.
Sunday, Saturday. Repeat.
If a teacher walked into the classroom and said "If only yesterday was tomorrow, today would have been Saturday" then the day would have to be Monday. The day before Monday is Sunday, and if Sunday were the next day, the current day would be Saturday.
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday are the days of the week.
Friday Saturday Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Sunday, Monday and Friday.
When you say next Monday on a Friday, it means in three days. There are two full days between Friday and Monday. The weekend, Saturday and Sunday is between Friday and Monday.
The first day of the week is Sunday.