Exact time Madeliene McCann last seen alive?

Sorry for asking but does anyone know the exact last time that Madeleine McCann was seen by anyone independent, ie the time of the last sighting that can be verified by someone *other* than the family or their immediate friends? I've searched looking for this detail but TBH there are gazillions of pages out there and given how preoccupied this place is with matters McCann, there's probably somebody who knows the answer straight off, having already been there and looked it up... thanks .