What was the date of vacancy when Viorel Moldovan replaced a manager?
{'header': ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment'], 'page_title': '', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-17115950-2', 'section_title': '', 'caption': '', 'rows': [['Rapid Bucureşti', 'Marian Rada', 'Contract not renewed', '3 Cannot handle non-empty timestamp argument! 2008', 'José Peseiro', '3 Cannot handle non-empty timestamp argument! 2008'], ['Otopeni', 'Gabriel Mărgărit', 'Sacked', '8 Cannot handle non-empty timestamp argument! 2008', 'Marian Bucurescu', '8 Cannot handle non-empty timestamp argument! 2008'], ['Rapid Bucureşti', 'José Peseiro', 'Sacked', '2 Cannot handle non-empty timestamp argument! 2008', 'Nicolae Manea', '3 Cannot handle non-empty timestamp argument! 2008'], ['Gloria Buzău', 'Álvaro Magalhães', 'Sacked', '3 Cannot handle non-empty timestamp argument! 2008', 'Mario Marinică', '9 Cannot handle non-empty timestamp argument! 2008'], ['Rapid Bucureşti', 'Nicolae Manea', 'Caretaker', '9 Cannot handle non-empty timestamp argument! 2008', 'José Peseiro', '9 Cannot handle non-empty timestamp argument! 2008'], ['Vaslui', 'Viorel Hizo', 'Sacked', '1 Cannot handle non-empty timestamp argument! 2008', 'Viorel Moldovan', '1 Cannot handle non-empty timestamp argument! 2008'], ['CFR Cluj', 'Maurizio Trombetta', 'Sacked', '6 Cannot handle non-empty timestamp argument! 2009', 'Ales Jindra and Dušan Uhrin, Jr.', '8 Cannot handle non-empty timestamp argument! 2009']], 'name': 'table_17115950_2'}