How are "Local Flights" defined in European regulations?
In the UK at least a local flight is one that begins and ends at the same aerodrome. This flight could be remaining in the circuit (pattern) or flying a 3 hour navigation exercise a long distance but as long as you come back to the same place without landing away it's a local flight. It is the same in all the other European countries I've flown to, I haven't been to Greece though so there's a chance their definition may be different.