Schedule Confuses Me

It was only this afternoon (Saturday) that I realized I would stay in Tokyo for three weeks not two. The schedule has been altered a few times and I got confused. Originally it was a week in Singapore and two in Tokyo. Even after the place for the work next week was changed from Singapore to Japan, I had somehow been thinking that I would be to stay in Tokyo only for two weeks with a weekend. This is one of those times when I need someone who manages my schedule.