MLchartDataset catalogue

Autumnal equinox

Term · Meteorology and atmospheric science · MLC-T-MET-000237

The equinox at which the sun approaches the Southern Hemisphere, marking the start of astronomical autumn in the Northern Hemisphere. The time of this occurrence is approximately September 22. On that day, daylight is everywhere 12 hours. Compare with vernal equinox, offset by six months.

Table 1. Record
IdentifierMLC-T-MET-000237
FieldMeteorology and atmospheric science
ReferencesNWS Glossary
Record as JSON 
{
  "id": "MLC-T-MET-000237",
  "term": "Autumnal equinox",
  "field": "Meteorology and atmospheric science",
  "definition": "The equinox at which the sun approaches the Southern Hemisphere, marking the start of astronomical autumn in the Northern Hemisphere. The time of this occurrence is approximately September 22. On that day, daylight is everywhere 12 hours. Compare with vernal equinox, offset by six months.",
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/autumnal-equinox/"
}

Record 237 of 3,164 in Meteorology and atmospheric science terminology (MLC-0110). Request the full dataset.