Photo from UNIAN The National Bank of Ukraine (NBU) on May 12 set the official forex rate of the hryvnia for Wednesday, May 13, at UAH 26.80 to the U.S. dollar, which let the country&#39;s national currency strengthen by two kopiykas. The official forex rate against the euro for Wednesday is fixed at UAH 29.08 per euro – the hryvnia also gained two kopiykas in value since Tuesday. Read alsoUkraine&#39;s international reserves grow by 3.1% in April – NBU The U.S. dollar at Kyiv&#39;s exchange booths on Tuesday, May 12, gained five kopiykas in value, as the rate was UAH 27.05 per U.S. dollar. The value of the euro increased by nine kopiykas, and the rate was UAH 29.29 per euro. As UNIAN reported earlier, the National Bank set the official forex rate for May 12 at UAH 26.82 to the U.S. dollar.