{
  "HAPI": "3.3.1",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "startDate": "1932-01-01T00:00:00Z",
  "stopDate": "2026-09-23T16:00:00Z",
  "cadence": "P1M",
  "timeStampLocation": "begin",
  "modificationDate": "2026-09-23T10:35:04Z",
  "title": "International Quiet and Disturbed Days (Best Available, monthly)",
  "description": "The ten international quietest days (Q1-Q10, quietest first) and the five international most disturbed days (D1-D5, most disturbed first) of each UT month, given as day-of-month (1-31). Selected from the planetary Kp index (introduced by Bartels, 1949, and endorsed by IAGA; based on K-values recorded at 13 geomagnetic observatories); produced by GFZ Potsdam, redistributed by WDC for Geomagnetism, Kyoto. Best Available version: highest processing level per period (currently definitive only). One record per month; the timestamp marks the first instant of the month (timeStampLocation=begin).",
  "resourceID": "doi:10.5880/Kp.0001",
  "datasetCitation": "Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O., & Morschhauser, A. (2021). The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity. Space Weather, 19, e2020SW002641. doi:10.1029/2020SW002641. Kp index data: Matzka, J., Bronkalla, O., Tornow, K., Elger, K., & Stolle, C. (2021), Geomagnetic Kp index, V. 1.0, GFZ Data Services, doi:10.5880/Kp.0001. Redistributed via WDC for Geomagnetism, Kyoto.",
  "licenseURL": "https://creativecommons.org/licenses/by/4.0/",
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "fill": null,
      "length": 24,
      "label": "Time"
    },
    {
      "name": "quietDay1",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q1",
      "description": "Quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay2",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q2",
      "description": "2nd quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay3",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q3",
      "description": "3rd quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay4",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q4",
      "description": "4th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay5",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q5",
      "description": "5th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay6",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q6",
      "description": "6th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay7",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q7",
      "description": "7th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay8",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q8",
      "description": "8th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay9",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q9",
      "description": "9th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "quietDay10",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "Q10",
      "description": "10th quietest day of the UT month (day-of-month)."
    },
    {
      "name": "disturbedDay1",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "D1",
      "description": "Most disturbed day of the UT month (day-of-month)."
    },
    {
      "name": "disturbedDay2",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "D2",
      "description": "2nd most disturbed day of the UT month (day-of-month)."
    },
    {
      "name": "disturbedDay3",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "D3",
      "description": "3rd most disturbed day of the UT month (day-of-month)."
    },
    {
      "name": "disturbedDay4",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "D4",
      "description": "4th most disturbed day of the UT month (day-of-month)."
    },
    {
      "name": "disturbedDay5",
      "type": "integer",
      "units": null,
      "fill": "0",
      "label": "D5",
      "description": "5th most disturbed day of the UT month (day-of-month)."
    },
    {
      "name": "versionCode",
      "type": "integer",
      "units": null,
      "fill": null,
      "label": "Version Code",
      "description": "Processing status code Mm (major*10+minor). Currently a single definitive version (versionCode 20)."
    }
  ],
  "x_LastUpdate": "2026-09-23T15:05:54Z"
}