puntosaurus and 212man are clearly right
forgetting the time zone thing, in lasors 2008 section F page 4(validity periods of ratings) from the CAA website its says:
"therefore a rating issued on, say 15th august 2006 will remain valid until 14th august 2007"
which is a year, if it was only to the 13th it wouldnt be a year
and we know ratings are for a year because it says so in the same para
it makes no sense at all to interpret this as meaning until close of play on 13th august when it clearly means 23:59:59s on the 14th, you guys are trying to make something simple complicated again
regards CF