Pentad

{
  "id": "MLC-T-MET-007839",
  "term": "Pentad",
  "field": "Meteorology and atmospheric science",
  "definition": "A period of five consecutive days used in meteorology and climatology for averaging atmospheric data. This grouping provides a temporal resolution between daily values and weekly or monthly averages, smoothing out daily noise while retaining sub-monthly variability. The year is divided into 73 pentads, with the last one in a leap year containing six days.",
  "url": "https://mlchart.com/terminology/meteorology/pentad/"
}