This point is dealt with in the article. People have different traveling arrangements. In my case sometimes I have to drop off my child at school and head in after the morning rush hour. So daily stand up is not first thing in the morning.
I worked on a project where we had the daily scrum (by conference call) at 4pm, precisely because people all started work at different times. All that that achieved was to mean that I was unproductive from about 2pm because I was thinking "if I get into something now I'll get interrupted before I properly finish it"
