{
  "contest": {
    "id": "irts-ssb-field-day",
    "name": "IRTS SSB Field Day",
    "sponsor": "IRTS",
    "sponsor_home": "https://www.irts.ie/",
    "country": "IE",
    "summary": "Twenty-four hours of portable SSB from Ireland over the first September weekend, on five HF bands.",
    "modes": [
      "SSB"
    ],
    "bands": [
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "A signal report and a serial number starting at 001.",
    "power_categories": [],
    "log_format": "",
    "log_deadline_days": 14,
    "log_submit_url": "",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "entity_list",
      "entities": [
        "EI"
      ],
      "verified": true,
      "note": "'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site.' Portable operation is part of the entry condition, not a category."
    },
    "active_from": null,
    "active_until": null,
    "note": "IT FALLS ON THE SAME WEEKEND AS RSGB'S, AND THAT IS NOT A COINCIDENCE. Both societies run their leg of the IARU Region 1 Field Day: RSGB's National Field Day is the first Saturday of June and IRTS's CW Field Day is the first full weekend, and the same pairing repeats in September. They are separate contests with separate rules, separate logs and separate results -- which is why both are here rather than one.\n\nThe pairing also settles what the IARU Region 1 Field Day IS: a framework each member society runs its own contest inside, not a contest IARU publishes rules for. DARC lists it on their calendar and says it is IARU's; UBA lists it too; IARU Region 1's own site publishes rules for the HF Championship and nothing else. Nobody claims it, so there is nothing to encode under IARU's name.\n\nENTRY IS EI ONLY AND PORTABLE ONLY: 'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site'. Stations elsewhere may be worked but cannot enter.\n\nTwo differences from the CW field day, both IRTS's own and both matching RSGB's pair exactly: it starts at 1300 rather than 1500, and it drops 160 m.",
    "verified": true,
    "rules_url": "https://www.irts.ie/cgi/st.cgi?r_hffdrules.html",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-23",
    "source_note": "irts.ie/cgi/st.cgi?r_hffdrules.html, IRTS's own Field Day rules, with the dates and deadlines from irts.ie/cgi/st.cgi?test_calendar, IRTS's own Rules & Calendar page. 'From 13:00 UTC Saturday to 13:00 UTC Sunday on the first full weekend in September.' Bands: '3.5, 7, 14, 21 and 28 MHz bands', for 'SSB phone contacts'. Same exchange and same entry condition as the CW field day. The calendar gives 5-6 September 2026 with logs due 20 September. Checked 2026-08-23."
  },
  "rule": {
    "plain": "First full weekend of September",
    "raw": {
      "type": "nth_full_weekend",
      "month": 9,
      "n": 1
    },
    "start": {
      "day_offset": 0,
      "time": "1300"
    },
    "end": {
      "day_offset": 1,
      "time": "1300"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "irts-ssb-field-day",
      "name": "IRTS SSB Field Day",
      "start": "2027-09-04T13:00:00Z",
      "end": "2027-09-05T13:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "3.5, 7, 14, 21 and 28 MHz -- no 160 m, unlike the CW field day.",
      "sponsor": "IRTS",
      "rules_url": "https://www.irts.ie/cgi/st.cgi?r_hffdrules.html",
      "verified": true,
      "note": "IT FALLS ON THE SAME WEEKEND AS RSGB'S, AND THAT IS NOT A COINCIDENCE. Both societies run their leg of the IARU Region 1 Field Day: RSGB's National Field Day is the first Saturday of June and IRTS's CW Field Day is the first full weekend, and the same pairing repeats in September. They are separate contests with separate rules, separate logs and separate results -- which is why both are here rather than one.\n\nThe pairing also settles what the IARU Region 1 Field Day IS: a framework each member society runs its own contest inside, not a contest IARU publishes rules for. DARC lists it on their calendar and says it is IARU's; UBA lists it too; IARU Region 1's own site publishes rules for the HF Championship and nothing else. Nobody claims it, so there is nothing to encode under IARU's name.\n\nENTRY IS EI ONLY AND PORTABLE ONLY: 'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site'. Stations elsewhere may be worked but cannot enter.\n\nTwo differences from the CW field day, both IRTS's own and both matching RSGB's pair exactly: it starts at 1300 rather than 1500, and it drops 160 m.",
      "exchange": "A signal report and a serial number starting at 001.",
      "country": "IE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": false,
      "eligibility_scope": "entity_list",
      "eligibility_reason": "Entry limited to EI. K stations may be worked but cannot submit an entry.",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-09-19T13:00:00Z",
      "uid": "irts-ssb-field-day-20270904T1300@contestcal",
      "start_date": "2027-09-04",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "irts-ssb-field-day",
      "name": "IRTS SSB Field Day",
      "start": "2028-09-02T13:00:00Z",
      "end": "2028-09-03T13:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "3.5, 7, 14, 21 and 28 MHz -- no 160 m, unlike the CW field day.",
      "sponsor": "IRTS",
      "rules_url": "https://www.irts.ie/cgi/st.cgi?r_hffdrules.html",
      "verified": true,
      "note": "IT FALLS ON THE SAME WEEKEND AS RSGB'S, AND THAT IS NOT A COINCIDENCE. Both societies run their leg of the IARU Region 1 Field Day: RSGB's National Field Day is the first Saturday of June and IRTS's CW Field Day is the first full weekend, and the same pairing repeats in September. They are separate contests with separate rules, separate logs and separate results -- which is why both are here rather than one.\n\nThe pairing also settles what the IARU Region 1 Field Day IS: a framework each member society runs its own contest inside, not a contest IARU publishes rules for. DARC lists it on their calendar and says it is IARU's; UBA lists it too; IARU Region 1's own site publishes rules for the HF Championship and nothing else. Nobody claims it, so there is nothing to encode under IARU's name.\n\nENTRY IS EI ONLY AND PORTABLE ONLY: 'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site'. Stations elsewhere may be worked but cannot enter.\n\nTwo differences from the CW field day, both IRTS's own and both matching RSGB's pair exactly: it starts at 1300 rather than 1500, and it drops 160 m.",
      "exchange": "A signal report and a serial number starting at 001.",
      "country": "IE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": false,
      "eligibility_scope": "entity_list",
      "eligibility_reason": "Entry limited to EI. K stations may be worked but cannot submit an entry.",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-09-17T13:00:00Z",
      "uid": "irts-ssb-field-day-20280902T1300@contestcal",
      "start_date": "2028-09-02",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "irts-ssb-field-day",
      "name": "IRTS SSB Field Day",
      "start": "2029-09-01T13:00:00Z",
      "end": "2029-09-02T13:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "3.5, 7, 14, 21 and 28 MHz -- no 160 m, unlike the CW field day.",
      "sponsor": "IRTS",
      "rules_url": "https://www.irts.ie/cgi/st.cgi?r_hffdrules.html",
      "verified": true,
      "note": "IT FALLS ON THE SAME WEEKEND AS RSGB'S, AND THAT IS NOT A COINCIDENCE. Both societies run their leg of the IARU Region 1 Field Day: RSGB's National Field Day is the first Saturday of June and IRTS's CW Field Day is the first full weekend, and the same pairing repeats in September. They are separate contests with separate rules, separate logs and separate results -- which is why both are here rather than one.\n\nThe pairing also settles what the IARU Region 1 Field Day IS: a framework each member society runs its own contest inside, not a contest IARU publishes rules for. DARC lists it on their calendar and says it is IARU's; UBA lists it too; IARU Region 1's own site publishes rules for the HF Championship and nothing else. Nobody claims it, so there is nothing to encode under IARU's name.\n\nENTRY IS EI ONLY AND PORTABLE ONLY: 'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site'. Stations elsewhere may be worked but cannot enter.\n\nTwo differences from the CW field day, both IRTS's own and both matching RSGB's pair exactly: it starts at 1300 rather than 1500, and it drops 160 m.",
      "exchange": "A signal report and a serial number starting at 001.",
      "country": "IE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": false,
      "eligibility_scope": "entity_list",
      "eligibility_reason": "Entry limited to EI. K stations may be worked but cannot submit an entry.",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-09-16T13:00:00Z",
      "uid": "irts-ssb-field-day-20290901T1300@contestcal",
      "start_date": "2029-09-01",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "irts-ssb-field-day",
      "name": "IRTS SSB Field Day",
      "start": "2030-09-07T13:00:00Z",
      "end": "2030-09-08T13:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "3.5, 7, 14, 21 and 28 MHz -- no 160 m, unlike the CW field day.",
      "sponsor": "IRTS",
      "rules_url": "https://www.irts.ie/cgi/st.cgi?r_hffdrules.html",
      "verified": true,
      "note": "IT FALLS ON THE SAME WEEKEND AS RSGB'S, AND THAT IS NOT A COINCIDENCE. Both societies run their leg of the IARU Region 1 Field Day: RSGB's National Field Day is the first Saturday of June and IRTS's CW Field Day is the first full weekend, and the same pairing repeats in September. They are separate contests with separate rules, separate logs and separate results -- which is why both are here rather than one.\n\nThe pairing also settles what the IARU Region 1 Field Day IS: a framework each member society runs its own contest inside, not a contest IARU publishes rules for. DARC lists it on their calendar and says it is IARU's; UBA lists it too; IARU Region 1's own site publishes rules for the HF Championship and nothing else. Nobody claims it, so there is nothing to encode under IARU's name.\n\nENTRY IS EI ONLY AND PORTABLE ONLY: 'Any individual or group operating in EI complying with Rule 3.6 of the General Rules and operating portable on a site'. Stations elsewhere may be worked but cannot enter.\n\nTwo differences from the CW field day, both IRTS's own and both matching RSGB's pair exactly: it starts at 1300 rather than 1500, and it drops 160 m.",
      "exchange": "A signal report and a serial number starting at 001.",
      "country": "IE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": false,
      "eligibility_scope": "entity_list",
      "eligibility_reason": "Entry limited to EI. K stations may be worked but cannot submit an entry.",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-09-22T13:00:00Z",
      "uid": "irts-ssb-field-day-20300907T1300@contestcal",
      "start_date": "2030-09-07",
      "mode_families": [
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    }
  ]
}