Date Picker

The Date Picker dialog provides a pane of controls designed to allow you to manipulate and select a date.

Date Picker 
 

Date label
In the example above, July 4, 2013 has been selected. It is a Wednesday and it was the 28th week of the year. The label is always up to date.

Today
Click on the Today button in order to select the today's date.

Week of year
Click on the "Week of year" button to open a dialog that allows you to enter a particular week of the year that you currently have selected.

+/- Day(s)
Increment or decrement the day value with the "+/- Day(s)" button.

+/- Week(s)
Increment or decrement the week value with the "+/- Week(s)" button.

+/- Month(s)
Increment or decrement the day value with the "+/- Month(s)" button.

+/- Quarter(s)
Increment or decrement the week value with the "+/- Quarter(s)" button.

+/- Year(s)
Increment or decrement the week value with the "+/- Year(s)" button.

Wikipedia
Opens your browser and shows events of the day that you have selected at Wikipedia.

Ok
Transfer the value to the NumericalChameleon's category "Queries on a Date" by clicking on the Ok button.

Close
Click the "Close" button to close the dialog.