Among the 33 museums and sites that will come to adapt the new spring-summer schedule (daily, from 8 a.m. to 8 p.m. through the end of October), are the Acropolis and the National Archaeological Museum in Athens, Crete's Knossos, Santorini's Akrotiri and the sites of Ancient Olympia and Delphi in the Peloponnese, while more are expected to join the program at a later date.