My understanding is that a medical exam for revalidation of an EASA medical certificate can be taken up to 45 days before the expiry date, so potentially if the actual exam was on 5 May 2015 the expiry date of the existing certificate could be anything up 19 June 2015 and the new certificate would then be valid to a date between 5 May 2016 and 19 June 2016.
Last edited by zimbo565; 2nd Nov 2016 at 21:28.
Reason: 18 June changed to 19 June (can't count!)