The 2011 Winter Solstice Sunrise Illumination at the Newgrange World Heritage site will be broadcast live by Heritage Ireland on December 21st from about 8:30am.
The Winter Solstice illumination at Newgrange was first was streamed live on the internet in 2007. Victor Reijs has posted a six minute compilation on YouTube of the one hour OPW (Office of Public Works) streamed video.
On the 21st of December the 5000 year old technology worked beautifully, with the winter solstice sunrise beam of golden light filling the Newgrange passage and chamber, however the 21st century webcast streaming technology struggled to cope when the maximum expected number of viewers exceeded 300,000.
You can find out more at Newgrange.com. Oh, at it starts at 8:30 am Ireland time. ;)