Hi, I got picked in the H1B lottery in 2013 and I got my visa stamped in the same year. I havent traveled with that Visa . Dates in I797B is as follows: Receipt date: Apr 2013 Notice date :May 2013 Valid from :Oct 2013 to Sept 2014 Hope the non cap is valid for 6 years. From which date the 6 years calculated (Receipt date/Notice date/ Valid start date/Valid end date)? ie till within which date I can file my visa again?