{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.0.0",
  "generatedAt": "2026-06-23T16:57:17.111Z",
  "sourcePath": "src/main/data/docs",
  "docId": "SMPTE.ST309.1999",
  "document": {
    "abstract": "This standard specifies a coding technique for the transmission of date and time zone information in the user groups of a time and control code signal. A two-digit hexadecimal code in a pair of binary groups specifies the time zone and the format for the date encoding in the remaining six binary groups. Date information is encoded either as six decimal digits to display the date in the YYMMDD format or as six decimal digits in the modified Julian date (MJD) format.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "approvalDate": "1999-09-01",
    "approvalDate$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json); Zoho is canonical for SMPTE standards metadata, registry value overwritten",
      "originalValue": "1999",
      "overridden": true,
      "source": "parsed",
      "updated": "2026-06-15T20:27:42.872Z",
      "version": "smpte-zoho-standards@v1"
    },
    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.851Z"
      },
      "year": "1999",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.851Z"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "docId": "SMPTE.ST309.1999",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
      "sourceUrl": "https://pub.smpte.org/doc/st309/19990901-pub/",
      "updated": "2025-10-30T00:00:00Z"
    },
    "docLabel": "SMPTE ST 309:1999",
    "docLabel$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docNumber": "309",
    "docNumber$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docSuiteTitle": "Television",
    "docSuiteTitle$meta": {
      "confidence": "high",
      "note": "Extracted from source XML <title> as the prefix before \" — Transmission of Date and Time Zone Information in Binary Groups of Time and Control Code\", with leading \"For \" stripped per SMPTE convention (from _source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-14T21:34:03.214Z"
    },
    "docTitle": "Transmission of Date and Time Zone Information in Binary Groups of Time and Control Code",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Concatenated suite title and publication title",
      "originalValue": "For Television — Transmission of Date and Time Zone Information in Binary Groups of Time and Control Code",
      "overridden": true,
      "source": "parsed",
      "updated": "2025-10-12T23:29:01.654Z"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "doi": "10.5594/SMPTE.ST309.1999",
    "doi$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "familyId": "309",
    "familyId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "group": "smpte-32nf-tc",
    "group$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "href": "https://doi.org/10.5594/SMPTE.ST309.1999",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "icsCodes": [
      {
        "code": "33.160.01",
        "description": "Audio, video and audiovisual systems in general"
      },
      {
        "code": "37.060.99",
        "description": "Other standards related to cinematography"
      }
    ],
    "icsCodes$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "isbn": "978-1-61482-449-7",
    "isbn$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "keywords": [
      "Communication",
      "Networking and Broadcast Technologies",
      "Television",
      "Time & Sync"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "numberOfPages": "5",
    "numberOfPages$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:12:21.844Z",
      "version": "smpte-zoho-standards@v1"
    },
    "pages": "1–5",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "productNumber": "SSD001450",
    "productNumber$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "publicationDate": "1999-09-01",
    "publicationDate$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.851Z"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.851Z"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "references": {
      "bibliographic": [
        "SMPTE.RP188.1996",
        "SMPTE.RP196.1997"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Extracted from sibling -ref.xml via extractSmpteSourceRefs.js",
        "source": "parsed",
        "updated": "2026-05-18T22:32:54.783Z"
      },
      "normative": [
        "SMPTE.ST262.1995",
        "SMPTE.ST12.1999",
        "ISO.8601.1988",
        "R-REC-TF.457-1"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Extracted from sibling -ref.xml via extractSmpteSourceRefs.js",
        "source": "parsed",
        "updated": "2026-05-18T23:48:48.871Z"
      }
    },
    "releaseTag": "19990901-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-10-12T23:29:01.654Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/st309/19990901-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000008kbq",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-11-11T04:48:31.141Z",
      "version": "extractDocs.js@commit:dea962f9e9d7"
    },
    "standardId": "20702",
    "standardId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08262015 STANDARDS REVISED DEPOSIT/smptes_st-309-1999_1/st0309-1999.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.851Z"
    },
    "status": {
      "active": false,
      "active$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-12T23:29:01.654Z"
      },
      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T23:29:01.654Z"
      },
      "superseded": true,
      "superseded$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "supersededBy": [
        "SMPTE.ST309.2012"
      ],
      "supersededBy$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "supersededDate": "2012-10-05",
      "supersededDate$meta": {
        "confidence": "high",
        "note": "Extracted directly from HTML",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-12T23:29:01.654Z"
      }
    }
  }
}