According to this NBC news report, it will occur every Friday and Sunday.
http://www.nbc4.tv/technology/2426381/detail.html?treets=la&tml=la_natlbreak &ts=T&tmi=la_natlbreak_15913_01270008222003 John Tolmachoff MCSE CSSA Engineer/Consultant eServices For You www.eservicesforyou.com