Dao of Seasons The Way of Nature
Autumn Equinox — 秋分
Autumn · The Fourth Solar Term

Autumn Equinox — 秋分

September 23 – October 7

Day and night are equal once again. The autumn midpoint arrives as tree colors peak and the harvest reaches its fullest moment.

What to Do This Term

Eat

Roasted Root Vegetables with Five-Spice

Pear and Ginger Compote

Explore recipes
Seasonal food

Move

Lung-Strengthening Qigong (15 min)

Deep Breathing Sequence (10 min)

Explore movement
Movement practice

Grow

Peak harvest season across temperate zones — apples, pears, late stone fruit, and root vegetables all ready within a 2-3 week window

Explore growing
Planting

Observe

[Northern China] Maple and ginkgo trees show vivid red and gold — peak fall color lasts only 7-10 days before leaves drop

Explore nature
Bird

About Autumn Equinox

Day and night are equal once again. The autumn midpoint arrives as tree colors peak and the harvest reaches its fullest moment.

Solar Longitude
255°
Season
Autumn
Element
Metal
Dates
September 23 – October 7
Term
18 of 24
Concept
What Is Embodied Adaptation
System
Body System
Domain
Body

This term closes autumn, when preparation turns urgent and the first frost arrives.

Core Definition

Day and night equal for the second time. The harvest peaks and the landscape turns brilliant.

This is the second balance point of the year — but unlike spring's balance, this one leads toward darkness.

Transition

How this term sits between what came before and what comes next

Compared to White Dew
  • Morning moisture shifts from dew to potential frost
  • Tree colors accelerate toward peak
Moving toward Cold Dew
  • First genuine risk of frost
  • Temperatures drop noticeably day to night

Phenology

What is happening in the natural world

01 Day and night equal in length for the second time this year — the balance point before darkness overtakes light
02 Deciduous trees reach peak color across temperate zones — maples and ginkgos display their most vivid reds and golds
03 Morning moisture shifts from dew to potential frost — overnight temperatures now approach the freezing threshold in northern regions
04 Soil temperatures begin their seasonal decline, slowing microbial decomposition and nutrient cycling

Eat

Move

Grow & Cultivate

Ecology Signals

Animal behavior, migration, habitat changes

Geese migration Northern China

Migrating geese form V-formations high overhead — their calls carry to the ground as they navigate by landscape features and celestial cues

Squirrel caching Eastern China

Squirrels at peak food-caching intensity — each animal spends the daylight hours burying nuts, relying on spatial memory and smell to recover them through winter

Autumn fog Central China

Valley fog forms when cooling ground meets still-warm water — the temperature inversion traps moisture at ground level, creating dense morning fog that burns off by midday

Reflection

“Balance returns to the world — not as a gift, but as a harvest”

“What you planted in spring is what you gather now”

Seasonal Essay

A deeper look at this solar term

Autumn Equinox marks the second point of balance in the year — day and night equal once more, before the dark begins to outpace the light. The harvest is at its fullest, leaves turn brilliant, and the air carries the first hint of cold. It is a threshold season: not yet winter, but no longer truly warm.

In classical Chinese medicine, autumn is associated with the lungs and the emotion of letting go — appropriate for a season when trees shed their leaves and farmers gather their crops. The equinox teaches us that release is not loss; it is preparation. What falls away returns to the soil and feeds the next cycle.

Movement practices shift toward strengthening the lungs and keeping joints mobile in cooling air. Deep, intentional breathing becomes a practice in itself — the literal taking-in and letting-go that mirrors the season.

Autumn Equinox is part of The Way of Nature Atlas — a broader exploration of ecological wisdom.