CNN Live on September 11 2001 from 8:40am - 10:11am.
Rest of the day available here:
http://www.youtube.com/watch?v=91QjzFBwKA8
For a first hand look at how the day unfolded in the skies that morning, view my 9/11 reconstructions with the real world air traffic control recordings below;
American Airlines Flight 11:
https://www.youtube.com/watch?v=KLPehFP_xZw
United Airlines Flight 175:
https://www.youtube.com/watch?v=aiIcDFralwc
American Airlines Flight 77:
https://www.youtube.com/watch?v=VrxqlroYvyw
United Airlines Flight 93:
https://www.youtube.com/watch?v=FR5FHg1rRLE