Apparent solar day

{
  "id": "MLC-T-MET-003586",
  "term": "Apparent solar day",
  "field": "Meteorology and atmospheric science",
  "definition": "The time interval between two successive transits of the true Sun across the local meridian. This duration varies throughout the year due to Earth's elliptical orbit and the tilt of its axis, making it slightly irregular. It differs from the mean solar day, which is based on a fictitious mean sun.",
  "synonyms": [
    "true solar day"
  ],
  "url": "https://mlchart.com/terminology/meteorology/apparent-solar-day/"
}