New R.E.M. Song Debuting Tonight... on CNN?

From CNN.com:

Rock group R.E.M. plans to debut a song from its upcoming album Wednesday on CNN's "Anderson Cooper 360°" program.

The song "Until the Day Is Done" also will appear later this month in "Planet in Peril," a four-hour CNN documentary that looks at environmental crises around the world.

Umm, ok. When exactly is "Anderson Cooper 360" on? And what channel on DC-area Comcast is CNN? I've been here two months and I still keep trying to go to the Time Warner cable channels.