{
  "contest": {
    "id": "arrl-10ghz-leg2",
    "name": "ARRL 10 GHz and Up Contest, Round 2",
    "sponsor": "ARRL",
    "sponsor_home": "http://www.arrl.org/contest-calendar",
    "country": "US",
    "summary": "",
    "modes": [
      "Mixed"
    ],
    "bands": [
      "3cm"
    ],
    "exchange": "",
    "power_categories": [],
    "log_format": "",
    "log_deadline_days": 30,
    "log_submit_url": "",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": false,
      "practical": "10 GHz+ microwave, rover-oriented. Very small participant pool."
    },
    "active_from": null,
    "active_until": null,
    "note": "CORRECTION: this was stored as a local-time contest running 0600 local Saturday to 2359 local Sunday. ARRL has since moved it to fixed UTC and says so explicitly in the rules. It is now a plain UTC record -- 0900Z Saturday to 0759Z Monday -- and carries no timezone or local_rolling flag. Operating time is capped at 42 hours inside that 47-hour window. Also resolves the suspected typo flagged earlier: ARRL's rule reads 'Third full weekend of August AND SEPTEMBER', so a single rule covers both rounds and the September anchor was right all along.",
    "verified": true,
    "rules_url": "http://www.arrl.org/10-ghz-up",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-12",
    "source_note": "arrl.org/10-ghz-up: 'Third full weekend of August and September'; 'Each weekend begins 0900 UTC Saturday and runs through 0759 UTC Monday. Participation is limited to 42 hours of operating time in each of the two contest weekends.' ARRL adds: 'NOTE: This is a change from the previous start and end times in local time. Participants are reminded to log all contacts in UTC time.' Cross-checked against ARRL's published 2026 dates, August 15-17 and September 19-21."
  },
  "rule": {
    "plain": "Third full weekend of September",
    "raw": {
      "type": "nth_full_weekend",
      "month": 9,
      "n": 3
    },
    "start": {
      "day_offset": 0,
      "time": "0900"
    },
    "end": {
      "day_offset": 2,
      "time": "0759"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "arrl-10ghz-leg2",
      "name": "ARRL 10 GHz and Up Contest, Round 2",
      "start": "2027-09-18T09:00:00Z",
      "end": "2027-09-20T07:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 46.98,
      "modes": [
        "Mixed"
      ],
      "submodes": [],
      "bands": [
        "3cm"
      ],
      "bands_note": "10 GHz through light",
      "sponsor": "ARRL",
      "rules_url": "http://www.arrl.org/10-ghz-up",
      "verified": true,
      "note": "CORRECTION: this was stored as a local-time contest running 0600 local Saturday to 2359 local Sunday. ARRL has since moved it to fixed UTC and says so explicitly in the rules. It is now a plain UTC record -- 0900Z Saturday to 0759Z Monday -- and carries no timezone or local_rolling flag. Operating time is capped at 42 hours inside that 47-hour window. Also resolves the suspected typo flagged earlier: ARRL's rule reads 'Third full weekend of August AND SEPTEMBER', so a single rule covers both rounds and the September anchor was right all along.",
      "exchange": "",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-12",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "10 GHz+ microwave, rover-oriented. Very small participant pool.",
      "log_due": "2027-10-20T07:59:00Z",
      "uid": "arrl-10ghz-leg2-20270918T0900@contestcal",
      "start_date": "2027-09-18",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "RTTY",
        "Digital",
        "FT8/FT4",
        "Mixed"
      ],
      "band_families": [
        "VHF+"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "arrl-10ghz-leg2",
      "name": "ARRL 10 GHz and Up Contest, Round 2",
      "start": "2028-09-16T09:00:00Z",
      "end": "2028-09-18T07:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 46.98,
      "modes": [
        "Mixed"
      ],
      "submodes": [],
      "bands": [
        "3cm"
      ],
      "bands_note": "10 GHz through light",
      "sponsor": "ARRL",
      "rules_url": "http://www.arrl.org/10-ghz-up",
      "verified": true,
      "note": "CORRECTION: this was stored as a local-time contest running 0600 local Saturday to 2359 local Sunday. ARRL has since moved it to fixed UTC and says so explicitly in the rules. It is now a plain UTC record -- 0900Z Saturday to 0759Z Monday -- and carries no timezone or local_rolling flag. Operating time is capped at 42 hours inside that 47-hour window. Also resolves the suspected typo flagged earlier: ARRL's rule reads 'Third full weekend of August AND SEPTEMBER', so a single rule covers both rounds and the September anchor was right all along.",
      "exchange": "",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-12",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "10 GHz+ microwave, rover-oriented. Very small participant pool.",
      "log_due": "2028-10-18T07:59:00Z",
      "uid": "arrl-10ghz-leg2-20280916T0900@contestcal",
      "start_date": "2028-09-16",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "RTTY",
        "Digital",
        "FT8/FT4",
        "Mixed"
      ],
      "band_families": [
        "VHF+"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "arrl-10ghz-leg2",
      "name": "ARRL 10 GHz and Up Contest, Round 2",
      "start": "2029-09-15T09:00:00Z",
      "end": "2029-09-17T07:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 46.98,
      "modes": [
        "Mixed"
      ],
      "submodes": [],
      "bands": [
        "3cm"
      ],
      "bands_note": "10 GHz through light",
      "sponsor": "ARRL",
      "rules_url": "http://www.arrl.org/10-ghz-up",
      "verified": true,
      "note": "CORRECTION: this was stored as a local-time contest running 0600 local Saturday to 2359 local Sunday. ARRL has since moved it to fixed UTC and says so explicitly in the rules. It is now a plain UTC record -- 0900Z Saturday to 0759Z Monday -- and carries no timezone or local_rolling flag. Operating time is capped at 42 hours inside that 47-hour window. Also resolves the suspected typo flagged earlier: ARRL's rule reads 'Third full weekend of August AND SEPTEMBER', so a single rule covers both rounds and the September anchor was right all along.",
      "exchange": "",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-12",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "10 GHz+ microwave, rover-oriented. Very small participant pool.",
      "log_due": "2029-10-17T07:59:00Z",
      "uid": "arrl-10ghz-leg2-20290915T0900@contestcal",
      "start_date": "2029-09-15",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "RTTY",
        "Digital",
        "FT8/FT4",
        "Mixed"
      ],
      "band_families": [
        "VHF+"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "arrl-10ghz-leg2",
      "name": "ARRL 10 GHz and Up Contest, Round 2",
      "start": "2030-09-21T09:00:00Z",
      "end": "2030-09-23T07:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 46.98,
      "modes": [
        "Mixed"
      ],
      "submodes": [],
      "bands": [
        "3cm"
      ],
      "bands_note": "10 GHz through light",
      "sponsor": "ARRL",
      "rules_url": "http://www.arrl.org/10-ghz-up",
      "verified": true,
      "note": "CORRECTION: this was stored as a local-time contest running 0600 local Saturday to 2359 local Sunday. ARRL has since moved it to fixed UTC and says so explicitly in the rules. It is now a plain UTC record -- 0900Z Saturday to 0759Z Monday -- and carries no timezone or local_rolling flag. Operating time is capped at 42 hours inside that 47-hour window. Also resolves the suspected typo flagged earlier: ARRL's rule reads 'Third full weekend of August AND SEPTEMBER', so a single rule covers both rounds and the September anchor was right all along.",
      "exchange": "",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-12",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "10 GHz+ microwave, rover-oriented. Very small participant pool.",
      "log_due": "2030-10-23T07:59:00Z",
      "uid": "arrl-10ghz-leg2-20300921T0900@contestcal",
      "start_date": "2030-09-21",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "RTTY",
        "Digital",
        "FT8/FT4",
        "Mixed"
      ],
      "band_families": [
        "VHF+"
      ],
      "duration_bucket": "gte24"
    }
  ]
}