Communist Party general secretary Aleka Papariga visits the Athens Water Company’s (EYDAP) offices at 10 a.m.

The Interior Ministry and the National Center for Public Administration and Self-Government (EKDDA) host a two-day conference on “Participating in the Development: The Proposal of Public Administration and the Challenge of Digital Greece,” at 10 a.m. at the Ledra Marriott Hotel. To tomorrow. For details, log on to www.ekdd.gr.

The Institute of International Relations (IDIS) holds a lecture on “Challenges in European Corporate Governance: The Board of Directors and Controlling Shareholders,” by Guido Ferrarini, professor of business and capital market law and director of the Center for Law and Finance, University of Genova. At 7.30 p.m. at the IDIS premises. For details, call 210.331.2325 or log on to www.idis.gr.

The Bank Workers’ Federation (OTOE) holds a press conference at 11 a.m. at the OTOE premises.

World Environment Day. State TV ERT is hosting an event titled “Reconsider the Environment” in an effort to raise people’s awareness of the environment and climate change. For details, call 210.740.7070.

The Hellenic Retail Business Association (SELPE) is hosting the fifth business summit on “Retailing: Innovative Strategies to Stay Ahead,” at the Athenaeum Inter-Continental Hotel. For details, call 210.672.7385 or log on to www.selpe.gr.

The University of Macedonia is hosting a three-day conference on “Holocaust as Local History: Past and Present of a Complex Relationship,” at the university campus in Thessaloniki. To Sunday. For details, log on to www.uom.gr.

Panteion University hosts an international conference on “Modern Crime Handling and Criminology,” at the university. To Saturday. For details, log on to http://criminology.panteion.gr.

French President Nicolas Sarkozy pays an official visit to Athens.

The National Center for Public Administration and Self-Government (EKDDA) begins a two-day conference on “Administrative Justice in the European Union,” at the Epirus Hotel in Ioannina prefecture. To Saturday. For details, call 211.1306.400.

The Hellenic Telecommunications & Post Commission (EETT) is hosting the third international conference on “Innovation in Broadband Networks and Services,” starting at 9.30 a.m. at the Grand Resort Hotel in Lagonissi. To Sunday. For details, log on to www.eett.gr.