From the Study Tree, which is in the Study Pane, right-click on Time Window from the shortcut menu, click New. The Create New Time Window dialog box opens.
Figure: Create New Time Window Dialog Box
In the Name box enter a name for the time window.
For the start date enter a date using the format ddmmmyyyy in the Start Date box. The start time must be entered in twenty-four hour clock time in the Time box and this time needs to occur after or at the start of the data referenced in the HEC-DSS record.
For the end date, enter a date using the format ddmmmyyyy in the End Date box. The End Date must be later than the Start Date; the simulation ends when the end date occurs, so it must include all of the hydrographs that are to be modeled. The end time is entered in twenty-four hour clock time in the Time box.
Click OK, the Create New Time Window dialog box closes. The time window has been created and the name appears in the Study Tree under the Time Window folder.
