Policies arranged by Verifly can have a length up to 8 consecutive hours. However, policies cannot currently extend past Civil Twilight. When you open the settings pane to choose policy options, you will see the available time options. If you select “Max” it means 8-hour policies are not available, so the system will calculate the max time from the present to the end of Civil Twilight in your coverage area. This will be shown on the settings pane, and is rounded to quarter-hour intervals.