The reference date is set via the
Reference date button in the Planon header
![button for Reference date button for Reference date](../CAD%20Integrator/images/referencedate.png)
. By default, the reference date is the current date and it is activated. Clicking
Reference date opens a date picker, from which you can select another date that is in the past or in the future. Once a new reference date is selected, the color of the header button changes and it displays the selected date.