You can use Excel, Microsoft's spreadsheet program, to store, organize, and analyze data in a number of ways.
The best way to do this is by converting your data to an Excel table. Select your data range (A1:E11), press Ctrl + T, and click OK. Excel names it something like "Table1"; in my case, it's Table3, ...
It's easy to change the date format in Microsoft Excel. You just need to use the "Date" drop-down menu, which gives you ...