As in previous years , the Acropolis site will be open late during summer full moon evenings.
Athens News Agency 
August Full Moon
The Culture Ministry will open 72 archaeological sites, monuments and museums all over the country on Saturday night, the night of the August Full Moon.
The development is taking place as part of efforts to familiarise the public with archaeological sites and with the country’s cultural heritage in general.
On August 16, the Acropolis will be open to the public from 19:00-01:30 and admission will be free. People visiting the Acropolis on this day must know that they are forbidden to carry food, drinks and musical instruments with them.