Beginning in mid-1996 , however , thanks primarily to the nWo angle , Monday Nitro started a ratings win-streak that lasted for eighty-three continuous weeks , ending on April 13 1998 . Beginning in mid-1996 , however , thanks primarily to the nWo angle , Monday Nitro started a ratings win-streak that lasted for 84 continuous weeks , ending on April 13 , 1998 .