The 6 months visa validity period starts from the date of medicals NOT the date of visa issuance. My visa was issued on 19th Feb, a day after my interview and expires on 27th Jul- that's roughly, 5 months. My medicals was on 29th Jan- that's 6 months.I think that, the visa validity has nothing to do with the fiscal year, you can travel anytime within the validity date which might go beyond the fiscal year. USA14 can confirm for us whether his visa 6months validity starts from the date of issue not the date of medicals. Maybe there is a change of style .