fall equinox
Autumn's day-night equilibrium
The fall equinox is one of two moments each year when the sun crosses the celestial equator, making day and night approximately equal in length.
In the Northern Hemisphere, it occurs around September 22 and marks the astronomical beginning of autumn.
The Southern Hemisphere's fall equinox happens around March 20.
Also called the autumnal equinox.
Year's ninth month
- autumnalOf the harvest season
- foliagePlant's leafy covering
- migrationMovement to new territory
- harvestGathering mature crops
acorns · pumpkin · cider · chestnuts · cranberry · maize · scarecrow · hayride
Morning light's arrival
- sunsetDay yielding to darkness
- twilightLight after sunset
- dawnDay's first glow
- duskDimming after sundown
twelve hours · circadian · diurnal · golden hour · daybreak · nightfall · solar noon · photoperiod
Cutting crops for collection
- gatheringCollection of people meeting
- cropsCultivated plants for harvest
- bountyReward for capture
- yieldProduce or relinquish
threshing · grain · orchard · vineyard · produce · cornucopia · farmers · agricultural
Equal distribution of weight
- symmetryInvariance under transformation
- alignmentCorrect relative positioning
- thresholdPoint of beginning
- transitionChange from one state
midpoint · turning point · celestial equator · light and dark · equalization · halfway point · seasonal shift · tipping point
Of the sky above
- eclipticSun's apparent annual path
- celestial equatorSphere's midplane above us
- zodiacCelestial belt of signs
- LibraSeventh zodiacal sign
declination · hemisphere · axial tilt · orbit · solar cycle · latitude
September
Year's ninth month
harvest · acorns · pumpkin · cider · chestnuts · cranberry · maize · scarecrow · hayride · apple picking
sunrise
Morning light's arrival
dusk · twelve hours · circadian · diurnal · golden hour · daybreak · nightfall · solar noon · photoperiod · crepuscular
reaping
Cutting crops for collection
yield · threshing · grain · orchard · vineyard · produce · cornucopia · farmers · agricultural · sickle
equipoise
Equal distribution of weight
- symmetryInvariance under transformation
- alignmentCorrect relative positioning
- thresholdPoint of beginning
transition · midpoint · turning point · celestial equator · light and dark · equalization · halfway point · seasonal shift · tipping point · counterbalance
celestial
Of the sky above
- eclipticSun's apparent annual path
- celestial equatorSphere's midplane above us
- zodiacCelestial belt of signs
Libra · declination · hemisphere · axial tilt · orbit · solar cycle · latitude
- seasonsautumn, summer, winter, spring, summertime
- Calendar ThemesApril showers, June solstice, seasonal cycles, calendar art, winter solstice
- celestial cycleslunar cycle, solar cycle, lunar phase, orbit, eclipse
- celestial eventssolar eclipse, lunar eclipse, meteor shower, eclipse, supernova
- Fall SeasonSeptember, October, November, autumn, harvest time
- SeptemberLabor Day, autumn leaves, apple picking, Rosh Hashanah, Yom Kippur
fall equinoxspring equinox
Day and night match
vernal equinox · March equinox · first day of spring · summer solstice · spring
fall equinoxsummer solstice
Longest daylight of year
winter solstice · solstice · June solstice · December solstice
fall, equinox, falls, fallen, falling, fell, equinoxes, equality, equally