The Financial Posted Date Range selection criteria can be used to narrow down the time frame for which details will be included in the output. Vendor Invoice transactions will be included based on post date, and timesheet transactions will include those that have been through labor cost post based on labor cost post date.

In this version of the Date Range control, you have the option of specifying:

Note that if you have enabled the Allow Creation of and Show Fiscal Calendar Options  (unanet.fiscal_calendar.enabled) property, additional 'fiscal' period options will be available in the drop-down.  
Fiscal periods must be established via the Admin >> Setup >> Fiscal Year screen in order to be available for use in reporting.  Specific Fiscal Periods appearing in drop-down lists will be a concatenation of Fiscal Year Name w/ Accounting Period.