{
  "name": "Daymark data coverage",
  "url": "https://daymarkholidays.com/data-coverage/",
  "lastSiteReview": "2026-09-24",
  "statusDefinitions": {
    "verified": "Matched to a named primary or official source for the stated coverage period.",
    "rule-based": "Calculated from a stable published recurrence or observance rule.",
    "planning-estimate": "Useful forward-looking guidance that the responsible organization has not yet confirmed.",
    "local-verification": "No single nationwide answer exists; the responsible local organization must be checked."
  },
  "datasets": [
    {
      "id": "federal-holiday-dates",
      "name": "Federal holiday calendar dates",
      "coverage": "2026–2050",
      "status": "rule-based",
      "source": "U.S. Office of Personnel Management",
      "sourceUrl": "https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/",
      "notes": "Actual calendar dates are calculated from the published fixed-date and weekday rules."
    },
    {
      "id": "federal-observed-dates",
      "name": "Federal observed weekdays",
      "coverage": "2026–2031",
      "status": "verified",
      "source": "U.S. Office of Personnel Management",
      "sourceUrl": "https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/",
      "notes": "Includes Friday and Monday observance shifts for weekend holidays."
    },
    {
      "id": "state-specific-guides",
      "name": "State-specific entries",
      "coverage": "All 50 states for 2026; 9 states for 2027",
      "status": "verified",
      "source": "Official state calendars, statutes or agency pages linked from each guide",
      "sourceUrl": "https://daymarkholidays.com/states/",
      "notes": "Entries are selected official state dates, not a promise that every state or local office closes."
    },
    {
      "id": "bank-schedules",
      "name": "Bank and Federal Reserve guidance",
      "coverage": "Planning guidance for 2026–2028",
      "status": "verified",
      "source": "Federal Reserve holiday schedules",
      "sourceUrl": "https://www.frbservices.org/about/holiday-schedules",
      "notes": "Individual bank and branch policies can differ."
    },
    {
      "id": "usps-schedules",
      "name": "USPS operating guidance",
      "coverage": "2026 confirmed; 2027–2028 planning markers",
      "status": "planning-estimate",
      "source": "USPS newsroom events and location tools",
      "sourceUrl": "https://about.usps.com/newsroom/events/",
      "notes": "Later-year federal dates are explicitly labeled for verification until USPS publishes the schedule."
    },
    {
      "id": "market-schedules",
      "name": "NYSE closures and early closes",
      "coverage": "2026–2028",
      "status": "verified",
      "source": "NYSE Holidays & Trading Hours",
      "sourceUrl": "https://www.nyse.com/markets/hours-calendars",
      "notes": "Other exchanges, products and trading venues can use different schedules."
    },
    {
      "id": "school-schedules",
      "name": "Public-school schedule guidance",
      "coverage": "Nationwide planning guidance",
      "status": "local-verification",
      "source": "Individual district and school calendars",
      "sourceUrl": "https://daymarkholidays.com/open/schools/",
      "notes": "There is no single U.S. public-school calendar."
    },
    {
      "id": "daylight-saving-time",
      "name": "Daylight saving time",
      "coverage": "2026–2028",
      "status": "rule-based",
      "source": "U.S. Department of Transportation",
      "sourceUrl": "https://www.transportation.gov/regulations/daylight-saving-time",
      "notes": "Local exemptions and jurisdictions that do not observe daylight saving time are identified on the guide."
    },
    {
      "id": "full-moon-dates",
      "name": "Full moon phase instants",
      "coverage": "2026–2027",
      "status": "verified",
      "source": "U.S. Naval Observatory",
      "sourceUrl": "https://aa.usno.navy.mil/calculated/moon/phases",
      "notes": "UTC phase instants can fall on a different local calendar day in U.S. time zones."
    },
    {
      "id": "calendars-printables",
      "name": "Annual calendars and printables",
      "coverage": "2026–2031",
      "status": "rule-based",
      "source": "Daymark holiday data assembled from the sources above",
      "sourceUrl": "https://daymarkholidays.com/calendar/2026/",
      "notes": "Printable layouts use the same calendar-date data as the annual guides."
    }
  ]
}