February 17th to June 12th, though a provision allows stations to switch over beforehand should they choose. In fact, hundreds of stations still plan to kill analog later this month, as they've been planning towards that date for years now. Honestly, we can't figure out what the purpose of this is. Unless there's more cash for the currently dry voucher program tucked away somewhere in that mind-bogglingly large "stimulus package," delaying the pain won't solve a thing. Though it will confuse the hell out of people, so there's that.