The summer sales started on July 11 and will continue until August 31, as announced by the Business and Retail Association of Greece. In fact, the summer sales also include the operation of the stores on Sunday's. In particular, the legislation in force allows stores to be open on the first Sunday after the start of the summer sales, which practically for this year means that the stores will be open on July 17. The opening hours of the stores for the Sunday of the summer sales are determined from 11 am to 8 pm, with the Piraeus Chamber of Commerce having proposed, as announced, the optional operation on July 17 from 11 am to 3:30 pm in the afternoon. READ MORE: METEORA: The hanging monasteries of Greece.