Reports are based on an underlying data period of either aggregated parcel counts or 50-day transactional data where you can drill through.
The data period used for each report is specified in the associated report introduction.
The manifest date selector, where available, allows you to filter the data according to a particular range of dates on which shipments were manifested from the warehouse:
You can change the date range in either of two ways:
Use the mouse in conjunction with the slider.
Click the From and/or To date at either end of the slider to bring up a calendar control that allows you to manually select a date.