Date Banding Wizard: Overview
The 'Date Banding Wizard' is a Virtual Variable Wizard which provides an easy way to make a new virtual variable from a date. It uses an existing FastStats date variable as a source.
Examples of the types of banded virtual variables you can create are:
Banded into quarters for two years until a given date
Fifty-two weekly bands ending today
You can also band dates using the Combine Categories Wizard. This will easily combine days together into months, years or decades, but works on absolute bandings rather than relative to a particular date.
On the Wizard tab click on the Date Banding link to start the wizard - Source