{
  "entity_type": "data_package_index",
  "dataset_id": "calcgrid-us-federal-holidays",
  "dataset_version": "us-opm-federal-holidays-2026-2027.1",
  "jurisdiction": "US",
  "coverage": {
    "start": "2026-01-01",
    "end": "2027-12-31"
  },
  "supported_years": [
    2026,
    2027
  ],
  "scope": "OPM federal employees and federal offices only",
  "year_urls": {
    "2026": "/api/v1/data/us-federal-holidays/2026",
    "2027": "/api/v1/data/us-federal-holidays/2027"
  },
  "calculators": [
    "/api/v1/calculators/us-federal-working-day",
    "/api/v1/calculators/us-federal-add-working-days",
    "/api/v1/calculators/us-federal-working-days-between"
  ],
  "sources": [
    {
      "name": "U.S. Office of Personnel Management Federal Holidays",
      "url": "https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/",
      "type": "government",
      "published_at": "2026-09-29",
      "scope": "federal_employees"
    },
    {
      "name": "OPM Federal Holidays - In Lieu Of Determination",
      "url": "https://www.opm.gov/policy-data-oversight/pay-leave/work-schedules/fact-sheets/federal-holidays-in-lieu-of-determination/",
      "type": "government_guidance",
      "scope": "federal_employee_work_schedules"
    },
    {
      "name": "5 U.S.C. 6103",
      "url": "https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title5-section6103&num=0&edition=prelim",
      "type": "legislation"
    }
  ]
}