I desperately need to know the distance and driving time between Patras docks and Piraeus docks. I am arriving at Patras at 1700 hours and leaving from Piraeus at 2300 hours and thought I had allowed enough time. Now I have heard that it can take about an hour from the time the ferry arrives at Patras harbour entrance to when I disembark, and that I must be at Piraeus 2 hours before the departure of the ferry. This will only leave me three hours for the journey. Is that going to be enough (In December) Any help appreciated.