Three built-in profiles
- Weekdays Only: Monday through Friday with no holiday claim and no sourced coverage window.
- OPM Nationwide: generally applicable federal holiday dates from 2024 through 2027.
- OPM DC Area: the nationwide dates plus limited-applicability Inauguration Day where OPM’s DC-area rule applies.
Overlap stays visible: January 20, 2025 carries both Birthday of Martin Luther King, Jr. and Inauguration Day (DC Area) in that profile. The date is excluded once and both reasons are shown.
Official source and observance
Holiday names and observed dates are based on the OPM federal holiday schedules. The calculator displays the source revision and rules hash with every result.
What this calendar does not claim
OPM schedules do not automatically define court, banking, exchange, contract, state, local, school, payroll, or private-employer deadlines. Use the calendar only when its rule matches the controlling definition.
Questions people ask
What federal holiday source does DueRule use?
The built-in sourced profiles use exact holiday dates materialized from the U.S. Office of Personnel Management federal holiday schedules.
What is the OPM DC Area profile?
It includes the same nationwide dates plus limited-applicability Inauguration Day for covered employees in the Washington, DC area.
Does DueRule predict future federal holidays?
No. Sourced calculations stop outside the exact 2024–2027 verified coverage.