{
  "contest": {
    "id": "rsgb-1_8mhz-first",
    "name": "RSGB 1.8 MHz Contest, February",
    "sponsor": "RSGB Contest Committee",
    "sponsor_home": "https://www.rsgbcc.org/hf/",
    "country": "GB",
    "summary": "Three hours on top band in February, CW and SSB, with separate sections for UK and non-UK entrants.",
    "modes": [
      "CW",
      "SSB"
    ],
    "bands": [
      "160m"
    ],
    "exchange": "RST plus a serial number starting at 1 and incrementing by 1.",
    "power_categories": [],
    "log_format": "",
    "log_deadline_days": null,
    "log_submit_url": "",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "The entry sections are split into UK&CD and Non-UK&CD, so stations outside the United Kingdom and Crown Dependencies have sections of their own."
    },
    "active_from": null,
    "active_until": null,
    "note": "THE HOURS CHANGED IN 2025 AND THE RULE DID NOT. RSGB ran 1900-2300 UTC in 2023 and 2024 and 2000-2300 from 2025, on the same second Saturday of February. The current three hours are encoded; the change is recorded here so a reader comparing an old result with this calendar is not misled. RSGB keeps a rules page per year, so its own dates check its own rule. Four years were read for this record -- 2023, 2024, 2025 and 2026 -- and the recurrence reproduces all of them.",
    "verified": true,
    "rules_url": "https://www.rsgbcc.org/hf/rules/2026/r160m.shtml",
    "rules_url_pattern": "https://www.rsgbcc.org/hf/rules/{year}/r160m.shtml",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-20",
    "source_note": "rsgbcc.org/hf/rules/2026/r160m.shtml, the RSGB Contest Committee's own rules, which cover both 1.8 MHz contests: 'First 1.8 MHz contest: Saturday 14 February 2026: 2000-2300 UTC: CW & SSB. Second 1.8 MHz contest: Saturday 21 November 2026: 2000-2300 UTC: CW only.' Frequencies: '1810-1850 kHz, CW; 1840-1900 kHz, SSB. Maximum legal power.' Exchange: 'RST plus Serial Number starting at 1 and incrementing by 1.' Sections are split UK&CD and Non-UK&CD, assisted and unassisted. RSGB's own dates for four years: 11 Feb 2023, 10 Feb 2024, 8 Feb 2025 and 14 Feb 2026 -- the second Saturday of February each time."
  },
  "rule": {
    "plain": "Second Saturday of February",
    "raw": {
      "type": "nth_weekday",
      "month": 2,
      "n": 2,
      "weekday": 5
    },
    "start": {
      "day_offset": 0,
      "time": "2000"
    },
    "end": {
      "day_offset": 0,
      "time": "2300"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "rsgb-1_8mhz-first",
      "name": "RSGB 1.8 MHz Contest, February",
      "start": "2027-02-13T20:00:00Z",
      "end": "2027-02-13T23:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 3,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-1850 kHz CW, 1840-1900 kHz SSB. Maximum legal power.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2027/r160m.shtml",
      "verified": true,
      "note": "THE HOURS CHANGED IN 2025 AND THE RULE DID NOT. RSGB ran 1900-2300 UTC in 2023 and 2024 and 2000-2300 from 2025, on the same second Saturday of February. The current three hours are encoded; the change is recorded here so a reader comparing an old result with this calendar is not misled. RSGB keeps a rules page per year, so its own dates check its own rule. Four years were read for this record -- 2023, 2024, 2025 and 2026 -- and the recurrence reproduces all of them.",
      "exchange": "RST plus a serial number starting at 1 and incrementing by 1.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-20",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "rsgb-1_8mhz-first-20270213T2000@contestcal",
      "start_date": "2027-02-13",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "rsgb-1_8mhz-first",
      "name": "RSGB 1.8 MHz Contest, February",
      "start": "2028-02-12T20:00:00Z",
      "end": "2028-02-12T23:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 3,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-1850 kHz CW, 1840-1900 kHz SSB. Maximum legal power.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2028/r160m.shtml",
      "verified": true,
      "note": "THE HOURS CHANGED IN 2025 AND THE RULE DID NOT. RSGB ran 1900-2300 UTC in 2023 and 2024 and 2000-2300 from 2025, on the same second Saturday of February. The current three hours are encoded; the change is recorded here so a reader comparing an old result with this calendar is not misled. RSGB keeps a rules page per year, so its own dates check its own rule. Four years were read for this record -- 2023, 2024, 2025 and 2026 -- and the recurrence reproduces all of them.",
      "exchange": "RST plus a serial number starting at 1 and incrementing by 1.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-20",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "rsgb-1_8mhz-first-20280212T2000@contestcal",
      "start_date": "2028-02-12",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "rsgb-1_8mhz-first",
      "name": "RSGB 1.8 MHz Contest, February",
      "start": "2029-02-10T20:00:00Z",
      "end": "2029-02-10T23:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 3,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-1850 kHz CW, 1840-1900 kHz SSB. Maximum legal power.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2029/r160m.shtml",
      "verified": true,
      "note": "THE HOURS CHANGED IN 2025 AND THE RULE DID NOT. RSGB ran 1900-2300 UTC in 2023 and 2024 and 2000-2300 from 2025, on the same second Saturday of February. The current three hours are encoded; the change is recorded here so a reader comparing an old result with this calendar is not misled. RSGB keeps a rules page per year, so its own dates check its own rule. Four years were read for this record -- 2023, 2024, 2025 and 2026 -- and the recurrence reproduces all of them.",
      "exchange": "RST plus a serial number starting at 1 and incrementing by 1.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-20",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "rsgb-1_8mhz-first-20290210T2000@contestcal",
      "start_date": "2029-02-10",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "rsgb-1_8mhz-first",
      "name": "RSGB 1.8 MHz Contest, February",
      "start": "2030-02-09T20:00:00Z",
      "end": "2030-02-09T23:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 3,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m"
      ],
      "bands_note": "1810-1850 kHz CW, 1840-1900 kHz SSB. Maximum legal power.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2030/r160m.shtml",
      "verified": true,
      "note": "THE HOURS CHANGED IN 2025 AND THE RULE DID NOT. RSGB ran 1900-2300 UTC in 2023 and 2024 and 2000-2300 from 2025, on the same second Saturday of February. The current three hours are encoded; the change is recorded here so a reader comparing an old result with this calendar is not misled. RSGB keeps a rules page per year, so its own dates check its own rule. Four years were read for this record -- 2023, 2024, 2025 and 2026 -- and the recurrence reproduces all of them.",
      "exchange": "RST plus a serial number starting at 1 and incrementing by 1.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-20",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "rsgb-1_8mhz-first-20300209T2000@contestcal",
      "start_date": "2030-02-09",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "160m"
      ],
      "duration_bucket": "2-12"
    }
  ]
}