When is Autumn Equinox?

For this calendar year, the deterministic solar-term range begins September 23, 2026 to October 8, 2026. The next term marks the end of this window.

Does the Autumn Equinox create a health effect?

No. TianJi treats it as a calendar reference for general lifestyle education, not as a cause of symptoms or a personal health predictor.

Why compare it with Spring Equinox?

Both are useful solar-calendar checkpoints for reviewing daily rhythm without assuming that seasons affect everyone in the same way.

Solar term entity

Autumn Equinox (秋分)

Autumn Equinox (秋分) is the solar-term window from September 23, 2026 to October 8, 2026. Autumn Equinox is the autumn counterpart to the spring midpoint, when the solar calendar offers a clear pause for review. It is a useful moment to notice whether shorter daylight and changing commitments are altering your sleep, meals, work pace, or time outside - without assuming the equinox causes any personal health outcome. Balance means choosing what is sustainable now. Simplify an evening routine, protect a meal break, or reset a weekly plan so it reflects the season you are actually living rather than the one you expected. The equinox makes a good checkpoint because it invites a small recalibration before late-autumn demands arrive. Keep the change modest enough to repeat, and let local conditions guide the details. TianJi derives the term date and the displayed Yunqi fields from @repo/yunqi-calc, not from generative text. The practical suggestions on this page are general lifestyle education, not diagnosis, treatment, or a substitute for professional care.

Deterministic calendar frame

These values are calculated by @repo/yunqi-calc for the exact solar-term boundary, not inferred by a language model.

Exact term range

September 23, 2026 through the start of October 8, 2026

Yunqi solar term

秋分

Annual movement

岁水太过，寒气流行

Current six-qi step

5. 五之气(主秋分~小雪)

Host and guest qi

阳明燥金 / 少阳相火

Overlay relation

顺 (不相得（逆）)

Three practical ways to meet this window

1.Use one weekly review to align plans with the daylight and commitments you now have; no optimisation protocol is implied.

2.Keep one regular meal free from screens or rushing when autumn schedules tighten; this is not a therapeutic diet.

3.Choose a repeatable activity time before shorter daylight makes the decision harder; stop while still comfortable.