{
  "contest": {
    "id": "cq-160-cw",
    "name": "CQ 160-Meter Contest, CW",
    "sponsor": "CQ Magazine",
    "sponsor_home": "https://cq160.com/",
    "country": "US",
    "summary": "48-hour single-band contest on 160 metres, worldwide, working U.S. states, Canadian provinces and DXCC countries as multipliers. Single operators may work 30 of the 48 hours and multi-operator stations 40.",
    "modes": [
      "CW"
    ],
    "bands": [
      "160m"
    ],
    "exchange": "RS(T) and state for U.S., province for Canada, and CQ Zone for DX",
    "power_categories": [
      {
        "name": "High Power",
        "max_watts": 1500
      },
      {
        "name": "Low Power",
        "max_watts": 100
      },
      {
        "name": "QRP",
        "max_watts": 5
      }
    ],
    "log_format": "Cabrillo",
    "log_deadline_days": 5,
    "log_submit_url": "https://cq160.com/logcheck/",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "CQ 160 rules I: 'For amateurs around the world to contact other amateurs in as many U.S. states, Canadian provinces and countries as possible.'"
    },
    "active_from": null,
    "active_until": null,
    "note": "",
    "verified": true,
    "rules_url": "https://cq160.com/rules/index.htm",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-16",
    "source_note": "CQ 160 publishes dates, not a recurrence rule: cq160.com/rules/index.htm gives the period ('Each contest is 48 hours long and starts at 2200Z') and the year's dates ('CW: 2200Z January 23 to 2200Z January 25. SSB: 2200Z February 27 to 2200Z March 1'), and none of the eleven archived CQ 160 rules 2016-2026 contains any recurrence wording. Last full weekend of January reproduces all eleven CQ-published CW runnings 2016-2026, including 2026 (Jan 24-25, not the Jan 31 last Saturday, whose Sunday falls in February). Verified 2026-08-16."
  },
  "rule": {
    "plain": "Last full weekend of January",
    "raw": {
      "type": "nth_full_weekend",
      "month": 1,
      "n": -1
    },
    "start": {
      "day_offset": -1,
      "time": "2200"
    },
    "end": {
      "day_offset": 1,
      "time": "2200"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "cq-160-cw",
      "name": "CQ 160-Meter Contest, CW",
      "start": "2027-01-29T22:00:00Z",
      "end": "2027-01-31T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 48,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-2000 kHz in ITU Region 1; 1800-2000 kHz in ITU Regions 2 and 3",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cq160.com/rules/index.htm",
      "verified": true,
      "note": "",
      "exchange": "RS(T) and state for U.S., province for Canada, and CQ Zone for DX",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-16",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-02-05T22:00:00Z",
      "uid": "cq-160-cw-20270129T2200@contestcal",
      "start_date": "2027-01-29",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-160-cw",
      "name": "CQ 160-Meter Contest, CW",
      "start": "2028-01-28T22:00:00Z",
      "end": "2028-01-30T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 48,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-2000 kHz in ITU Region 1; 1800-2000 kHz in ITU Regions 2 and 3",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cq160.com/rules/index.htm",
      "verified": true,
      "note": "",
      "exchange": "RS(T) and state for U.S., province for Canada, and CQ Zone for DX",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-16",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-02-04T22:00:00Z",
      "uid": "cq-160-cw-20280128T2200@contestcal",
      "start_date": "2028-01-28",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-160-cw",
      "name": "CQ 160-Meter Contest, CW",
      "start": "2029-01-26T22:00:00Z",
      "end": "2029-01-28T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 48,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-2000 kHz in ITU Region 1; 1800-2000 kHz in ITU Regions 2 and 3",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cq160.com/rules/index.htm",
      "verified": true,
      "note": "",
      "exchange": "RS(T) and state for U.S., province for Canada, and CQ Zone for DX",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-16",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-02-02T22:00:00Z",
      "uid": "cq-160-cw-20290126T2200@contestcal",
      "start_date": "2029-01-26",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-160-cw",
      "name": "CQ 160-Meter Contest, CW",
      "start": "2030-01-25T22:00:00Z",
      "end": "2030-01-27T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 48,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-2000 kHz in ITU Region 1; 1800-2000 kHz in ITU Regions 2 and 3",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cq160.com/rules/index.htm",
      "verified": true,
      "note": "",
      "exchange": "RS(T) and state for U.S., province for Canada, and CQ Zone for DX",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-16",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-02-01T22:00:00Z",
      "uid": "cq-160-cw-20300125T2200@contestcal",
      "start_date": "2030-01-25",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "gte24"
    }
  ]
}