When I want export the result set of a sql query from Management Studio to Excel, Excel does some inconsistent formatting to column with datetime values.
IN SSMS the Date looks like that in the first picture, and after exporting the values to Excel some rows are formatted different, like in the second picture.
I only have this problem with Excel, (Tools like Libre Office don´t have this issue), but on the system which I am working on, I am not allowed to install libre office. Any advice from an Excel pro?!
EDIT: SSMS is installed in German and Excel in English (thanks to my client), EDIT2: changed language settings, no effect
Thank you

