Um ano depois, você pode usar uma consulta na Web e alterar as opções para desativar o reconhecimento de data, conforme especificado aqui : link
Em vez de abrir o arquivo HTML, aponte a consulta da Web para um endereço local (file: /// C: /Users/.../file.html)
To prevent Excel from automatically converting numbers to dates, follow these steps when you create a new Web query: In Microsoft Office Excel 2003 or in Microsoft Excel 2002, point to Import External Data on the Data menu, and then click New Web Query.
In Microsoft Office Excel 2007, click From Web in the Get External Data group on the Data tab.
In the Address box, type the address of the Web page that contains the table that you want to import, and then click Go.
Click the appropriate table marker to select the table that you want to import.
Click Options.
Under Other Import settings, click to select the Disable date recognition check box.