{
  "contest": {
    "id": "srs-tesla-memorial-hf-cw",
    "name": "Tesla Memorial HF CW Contest",
    "sponsor": "SRS",
    "sponsor_home": "https://www.radiosport.yu1srs.org.rs/",
    "country": "RS",
    "summary": "Serbia's overnight CW contest on 80m and 40m, scored purely by distance -- no multipliers, no penalties, just twelve hours from 1800 UTC.",
    "modes": [
      "CW"
    ],
    "bands": [
      "80m",
      "40m"
    ],
    "exchange": "RST, a serial number from 001 and a four-character locator -- 599 023 KN03.",
    "power_categories": [],
    "log_format": "Cabrillo",
    "log_deadline_days": null,
    "log_submit_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/log-submitting-service",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "The rules set no entry restriction and score every contact by distance; stations using a prefix not assigned by the ITU are placed in check logs."
    },
    "active_from": null,
    "active_until": null,
    "note": "'Second weekend in March' is encoded as the second FULL weekend, and SRS's own published dates settle it: 2019 09/10, 2020 14/15, 2021 13/14, 2022 12/13, 2023 11/12, 2024 09/10, 2025 08/09 and 2026 14/15 -- eight years, all reproduced. 2020 is the year that discriminates: 1 March 2020 was a Sunday, so counting weekends by their Sunday gives 7/8, but SRS published 14/15. The log deadline is a stated instant (19 March 2026, 23:59 UTC) rather than an interval from the contest end, so it is recorded here. BLOCKERS: yudx.org, the host in the registry, no longer resolves; SRS's own domestic schedule and rules pages ('Raspored takmicenja i pravila', 'Takmicenja') render only a JavaScript placeholder, and stari.yu1srs.org.rs returns HTTP 500 -- so KT Prvenstvo Srbije and KT Kup SRS could not be read and are not encoded.",
    "verified": true,
    "rules_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/rules",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-19",
    "source_note": "radiosport.yu1srs.org.rs/HFTeslaMemorial, the Savez radio-amatera Srbije's own rules page. 'Contest rules 2026 / March 14/15, 2026 / Starts: 18:00 UTC Saturday March 14 / Ends: 05:59 UTC Sunday March 15'. The recurrence is SRS's own: the contest 'will be held every year, every second weekend in March' / 'odrzavace se svake godine drugog vikenda u martu'. Bands: '3.5 MHz (80m) and 7MHz (40m) bands may be used.' Mode: CW. Exchange: 'QSO NR: Starting from 001 and increases by 1 for each subsequent QSO regardless of the band' plus a four-character locator -- 'Exchange example: 599 023 KN03'. Points run on a distance table from 10 to 45; there are no multipliers and no penalties. 'XII. Deadline for sending a log: 19.03.2026. until 23.59 UTC.' Logs via the web service or tesla(at)yu1srs.org.rs; paper logs are not accepted."
  },
  "rule": {
    "plain": "Second full weekend of March",
    "raw": {
      "type": "nth_full_weekend",
      "month": 3,
      "n": 2
    },
    "start": {
      "day_offset": 0,
      "time": "1800"
    },
    "end": {
      "day_offset": 1,
      "time": "0559"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "srs-tesla-memorial-hf-cw",
      "name": "Tesla Memorial HF CW Contest",
      "start": "2027-03-13T18:00:00Z",
      "end": "2027-03-14T05:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 11.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m"
      ],
      "bands_note": "",
      "sponsor": "SRS",
      "rules_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/rules",
      "verified": true,
      "note": "'Second weekend in March' is encoded as the second FULL weekend, and SRS's own published dates settle it: 2019 09/10, 2020 14/15, 2021 13/14, 2022 12/13, 2023 11/12, 2024 09/10, 2025 08/09 and 2026 14/15 -- eight years, all reproduced. 2020 is the year that discriminates: 1 March 2020 was a Sunday, so counting weekends by their Sunday gives 7/8, but SRS published 14/15. The log deadline is a stated instant (19 March 2026, 23:59 UTC) rather than an interval from the contest end, so it is recorded here. BLOCKERS: yudx.org, the host in the registry, no longer resolves; SRS's own domestic schedule and rules pages ('Raspored takmicenja i pravila', 'Takmicenja') render only a JavaScript placeholder, and stari.yu1srs.org.rs returns HTTP 500 -- so KT Prvenstvo Srbije and KT Kup SRS could not be read and are not encoded.",
      "exchange": "RST, a serial number from 001 and a four-character locator -- 599 023 KN03.",
      "country": "RS",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-19",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "srs-tesla-memorial-hf-cw-20270313T1800@contestcal",
      "start_date": "2027-03-13",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "80m",
        "40m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "srs-tesla-memorial-hf-cw",
      "name": "Tesla Memorial HF CW Contest",
      "start": "2028-03-11T18:00:00Z",
      "end": "2028-03-12T05:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 11.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m"
      ],
      "bands_note": "",
      "sponsor": "SRS",
      "rules_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/rules",
      "verified": true,
      "note": "'Second weekend in March' is encoded as the second FULL weekend, and SRS's own published dates settle it: 2019 09/10, 2020 14/15, 2021 13/14, 2022 12/13, 2023 11/12, 2024 09/10, 2025 08/09 and 2026 14/15 -- eight years, all reproduced. 2020 is the year that discriminates: 1 March 2020 was a Sunday, so counting weekends by their Sunday gives 7/8, but SRS published 14/15. The log deadline is a stated instant (19 March 2026, 23:59 UTC) rather than an interval from the contest end, so it is recorded here. BLOCKERS: yudx.org, the host in the registry, no longer resolves; SRS's own domestic schedule and rules pages ('Raspored takmicenja i pravila', 'Takmicenja') render only a JavaScript placeholder, and stari.yu1srs.org.rs returns HTTP 500 -- so KT Prvenstvo Srbije and KT Kup SRS could not be read and are not encoded.",
      "exchange": "RST, a serial number from 001 and a four-character locator -- 599 023 KN03.",
      "country": "RS",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-19",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "srs-tesla-memorial-hf-cw-20280311T1800@contestcal",
      "start_date": "2028-03-11",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "80m",
        "40m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "srs-tesla-memorial-hf-cw",
      "name": "Tesla Memorial HF CW Contest",
      "start": "2029-03-10T18:00:00Z",
      "end": "2029-03-11T05:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 11.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m"
      ],
      "bands_note": "",
      "sponsor": "SRS",
      "rules_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/rules",
      "verified": true,
      "note": "'Second weekend in March' is encoded as the second FULL weekend, and SRS's own published dates settle it: 2019 09/10, 2020 14/15, 2021 13/14, 2022 12/13, 2023 11/12, 2024 09/10, 2025 08/09 and 2026 14/15 -- eight years, all reproduced. 2020 is the year that discriminates: 1 March 2020 was a Sunday, so counting weekends by their Sunday gives 7/8, but SRS published 14/15. The log deadline is a stated instant (19 March 2026, 23:59 UTC) rather than an interval from the contest end, so it is recorded here. BLOCKERS: yudx.org, the host in the registry, no longer resolves; SRS's own domestic schedule and rules pages ('Raspored takmicenja i pravila', 'Takmicenja') render only a JavaScript placeholder, and stari.yu1srs.org.rs returns HTTP 500 -- so KT Prvenstvo Srbije and KT Kup SRS could not be read and are not encoded.",
      "exchange": "RST, a serial number from 001 and a four-character locator -- 599 023 KN03.",
      "country": "RS",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-19",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "srs-tesla-memorial-hf-cw-20290310T1800@contestcal",
      "start_date": "2029-03-10",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "80m",
        "40m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "srs-tesla-memorial-hf-cw",
      "name": "Tesla Memorial HF CW Contest",
      "start": "2030-03-09T18:00:00Z",
      "end": "2030-03-10T05:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 11.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m"
      ],
      "bands_note": "",
      "sponsor": "SRS",
      "rules_url": "https://www.radiosport.yu1srs.org.rs/HFTeslaMemorial/index.php/rules",
      "verified": true,
      "note": "'Second weekend in March' is encoded as the second FULL weekend, and SRS's own published dates settle it: 2019 09/10, 2020 14/15, 2021 13/14, 2022 12/13, 2023 11/12, 2024 09/10, 2025 08/09 and 2026 14/15 -- eight years, all reproduced. 2020 is the year that discriminates: 1 March 2020 was a Sunday, so counting weekends by their Sunday gives 7/8, but SRS published 14/15. The log deadline is a stated instant (19 March 2026, 23:59 UTC) rather than an interval from the contest end, so it is recorded here. BLOCKERS: yudx.org, the host in the registry, no longer resolves; SRS's own domestic schedule and rules pages ('Raspored takmicenja i pravila', 'Takmicenja') render only a JavaScript placeholder, and stari.yu1srs.org.rs returns HTTP 500 -- so KT Prvenstvo Srbije and KT Kup SRS could not be read and are not encoded.",
      "exchange": "RST, a serial number from 001 and a four-character locator -- 599 023 KN03.",
      "country": "RS",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-19",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": null,
      "uid": "srs-tesla-memorial-hf-cw-20300309T1800@contestcal",
      "start_date": "2030-03-09",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "80m",
        "40m"
      ],
      "duration_bucket": "2-12"
    }
  ]
}