{
  "contest": {
    "id": "cva-dx-ssb",
    "name": "CVA DX Contest (SSB)",
    "sponsor": "CRAEC",
    "sponsor_home": "https://cvadx.org/",
    "country": "BR",
    "summary": "Brazil's army-radio-club DX contest, SSB leg: 27 hours on the fourth weekend of August.",
    "modes": [
      "SSB"
    ],
    "bands": [
      "160m",
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "Brazil: RS plus state. Elsewhere: RS plus continent. Military stations: RS plus MIL.",
    "power_categories": [],
    "log_format": "Cabrillo",
    "log_deadline_days": 5,
    "log_submit_url": "https://cvadx.org/envio-de-logs",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "Civilian and military stations worldwide."
    },
    "active_from": null,
    "active_until": null,
    "note": "'Fourth weekend' read as the ordinal full weekend; counted from the month's end it would be 8-9 August, so the stated 2026 dates fit only the ordinal reading.",
    "verified": true,
    "rules_url": "https://cvadx.org/regulamento/",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-10-15",
    "source_note": "cvadx.org/regulamento (updated 03/08/2026, 67th edition): 'Quarto final de semana de agosto'; 2026 SSB 22 Aug 1800 UTC to 23 Aug 2100 UTC; log deadline 28 Aug 23:59 UTC. Read 2026-10-15."
  },
  "rule": {
    "plain": "Fourth full weekend of August",
    "raw": {
      "type": "nth_full_weekend",
      "month": 8,
      "n": 4
    },
    "start": {
      "day_offset": 0,
      "time": "1800"
    },
    "end": {
      "day_offset": 1,
      "time": "2100"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "cva-dx-ssb",
      "name": "CVA DX Contest (SSB)",
      "start": "2027-08-28T18:00:00Z",
      "end": "2027-08-29T21:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 27,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "CRAEC",
      "rules_url": "https://cvadx.org/regulamento/",
      "verified": true,
      "note": "'Fourth weekend' read as the ordinal full weekend; counted from the month's end it would be 8-9 August, so the stated 2026 dates fit only the ordinal reading.",
      "exchange": "Brazil: RS plus state. Elsewhere: RS plus continent. Military stations: RS plus MIL.",
      "country": "BR",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-09-03T21:00:00Z",
      "uid": "cva-dx-ssb-20270828T1800@contestcal",
      "start_date": "2027-08-28",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cva-dx-ssb",
      "name": "CVA DX Contest (SSB)",
      "start": "2028-08-26T18:00:00Z",
      "end": "2028-08-27T21:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 27,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "CRAEC",
      "rules_url": "https://cvadx.org/regulamento/",
      "verified": true,
      "note": "'Fourth weekend' read as the ordinal full weekend; counted from the month's end it would be 8-9 August, so the stated 2026 dates fit only the ordinal reading.",
      "exchange": "Brazil: RS plus state. Elsewhere: RS plus continent. Military stations: RS plus MIL.",
      "country": "BR",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-09-01T21:00:00Z",
      "uid": "cva-dx-ssb-20280826T1800@contestcal",
      "start_date": "2028-08-26",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cva-dx-ssb",
      "name": "CVA DX Contest (SSB)",
      "start": "2029-08-25T18:00:00Z",
      "end": "2029-08-26T21:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 27,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "CRAEC",
      "rules_url": "https://cvadx.org/regulamento/",
      "verified": true,
      "note": "'Fourth weekend' read as the ordinal full weekend; counted from the month's end it would be 8-9 August, so the stated 2026 dates fit only the ordinal reading.",
      "exchange": "Brazil: RS plus state. Elsewhere: RS plus continent. Military stations: RS plus MIL.",
      "country": "BR",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-08-31T21:00:00Z",
      "uid": "cva-dx-ssb-20290825T1800@contestcal",
      "start_date": "2029-08-25",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cva-dx-ssb",
      "name": "CVA DX Contest (SSB)",
      "start": "2030-08-24T18:00:00Z",
      "end": "2030-08-25T21:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 27,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "CRAEC",
      "rules_url": "https://cvadx.org/regulamento/",
      "verified": true,
      "note": "'Fourth weekend' read as the ordinal full weekend; counted from the month's end it would be 8-9 August, so the stated 2026 dates fit only the ordinal reading.",
      "exchange": "Brazil: RS plus state. Elsewhere: RS plus continent. Military stations: RS plus MIL.",
      "country": "BR",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-08-30T21:00:00Z",
      "uid": "cva-dx-ssb-20300824T1800@contestcal",
      "start_date": "2030-08-24",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    }
  ]
}