Autumn Equinox 2025 Uk Calendar. The full moon has long held a special place in human history, serving as a celestial calendar to mark months and seasons. The meteorological calendar simplifies the year into four seasons of.
In 2025 the autumnal equinox will occur on 22 september at 18.20 gmt (19.20 bst). The first day of autumn often called fall (september equinox or autumnal equinox) is when the.