Hi,
 You can sort date field in ascending/descending order or sort by a different measure/field or my month/year/day wise.

- Sort manually by clicking on sort icon for month order.
 
- Right click on the field and click on sort, sort dialog box opens.
 
             
- Select the field by which need to be sorted and the order for sort. Then click on ok.
 

Hope this helps you.
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