Via this link.

"On the night before Christmas, the Federal Communications Commission proposed rules that would let some full-power TV stations continue streaming a bare-bones analog signal for 30 days after the DTV transition. The "Analog Nightlight" program will allow those stations to keep their analog broadcast going "for the limited purpose of providing public safety and digital transition information," the FCC says. Meanwhile a key member of the House of Representatives is warning Congress that it may need to rush more money to the government's analog converter set top box program.

The analog nightlight rule means that couch potatoes who, as of February 17, still haven't figured out that their old analog sets can't receive digital broadcasts won't be left completely in the dark. After that day, all full-power stations must go digital. The nightlight system will permit eligible full-power license holders to continue to broadcast emergency news and information in analog using both English and Spanish. They can also transmit information about the transition and where to get help—at for roughly a month after DTV Day.