This query runs fine
Insert into [Sheet1$] values ('DBT39435M','Daniel','B','Tonini','5','75',0877,'01-01-1990 00:00:00')
but this one fails with the exact same error that you see in your case...
Insert into [Sheet1$] values ('DBT39435M','Daniel','B','Tonini','5','75','0877',[01-01-1990...