Select with the mouse:
| 1.Left-click on the date (day, month or year - Fig. bellow): 2.Key in the desired value. 
 | 
 | 
| 1.Left-click on the  2.Left-click on the desired day of the month - months can be scrolled with the arrow keys (Fig. above) or by left-clicking on the name of the month to select the desired month (Fig. bellow): 
 | 
 |