H asked me this today. We often get confused in this house. Any change to routine means the flow of days of the week is disturbed. Sometimes we are convinced it is Sunday evening when we still have another day of the weekend to enjoy. The Olympics did this to us too.
So tomorrow is a weekday, then we get another weekend in effect, 25th and 26th. Then 2 more weekdays, followed by another weekend, 29th, 30th. Then the same again for the week of New Year... So 5 weekends in 2 weeks, wow!