16 days?

Yeah, sure, Iran can produce enriched uranium for a nuclear bomb in 16 days -- provided those days are February 1 to February 17, 2016.
Maybe.
IF they can somehow get 54,000 centrifuges. Right now, they have 180.
Oh, and they also have to figure out how to do it.
So as Steve Gilliard notes, the scare headlines about Iran having the nuclear bomb are utter bullshit.