{
  "formatName": "Clock RINEX File Format",
  "version": "2.0",
  "formatDescription": "A Clock RINEX (Receiver Independent Exchange) Format holds high precision time information for ground base receivers and GNSS (Global Navigation Satellite System) satellites. The files allow for the exchange of precise timing information.",
  "binaryFileFormat": null,
  "formatTypes": "Text (Structured)",
  "identifiers": [
    {
      "identifierText": "fmt/2109",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 4474,
      "name": "Clock RINEX File Format 2.0",
      "note": "BOF; Offset: 5; Magic Bytes: 2.00{11}C{39}RINEX",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 5,
          "maxOffset": 0,
          "byteSequence": "322E3030{11}43{39}52494E4558",
          "endianness": null,
          "byteSequenceID": 4870
        }
      ]
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "clk",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Is previous version of",
      "relatedFormatID": 4986,
      "relatedFormatName": "Clock RINIEX File Format",
      "relatedFormatPUID": "fmt/2110"
    }
  ],
  "containerSignatures": [],
  "formatNote": "RINEX Extensions to Handle Clock Information - https://files.igs.org/pub/data/format/rinex_clock304.txt Clock RINEX - https://gssc.esa.int/education/library/standards-and-data-formats/file-formats/clock-rinex/",
  "lastUpdatedDate": "02/09/2026",
  "formatSourceDate": "02/09/2026",
  "fileFormatID": 4985,
  "submittedBy": [
    349
  ]
}