Here is the Australian East Coast time for the 'Deep Impact' event plus links to view it on the internet.
The spacecraft should arrive at the comet Tempel 1 on July 4 about 4pm our time (AEST.)
The Visitor Center at Kitt Peak National Observatory plans to offer a live feed of the encounter between NASA's Deep Impact mission and Comet Tempel 1 running about an hour before the planned impact. though about 45 minutes afterward.
The feed will consist of still images of the distant comet, and a frequently updated movie assembled from the individual frames. Each frame will consist of a 30-second exposure taken with an electronic CCD imager attached to the 20-inch Ritchey-Chretien telescope in the Kitt Peak Visitor Centre observatory.
The comet feed from Kitt Peak will be available on the Internet at:
www.noao.edu/news/deep-impact
Watch NASA TV on the internet:
http://www.nasa.gov/multimedia/nasatv/