When a field is associated with date-formatted data, clicking inside of the field will display the following date selection control:
The arrow button at the top allows you to navigate to a different month. The drop-down list allows you to select the relevant year. Click on the date to select it.
If you are in a locale that uses a non-Gregorian calendar, the calendar control is not displayed. Instead, a masked field is displayed, allowing you enter the date in the proper format. Leading zeros must be entered for days and months.