The reportingPeriodEnd on a ReportPackage is the last day of the monitoring period you are reporting on — for example, December 31 for an annual report or June 30 for a second-quarter report. Together with reportingPeriodStart, it defines the precise data window referenced in figures, tables, and the narrative sections. Confirm both period boundaries against your permit or consent decree before creating the package, as regulators often compare reported period dates to required submission windows to verify compliance with reporting deadlines.
Technical section
Data model, API, and internals — visible to developers.