For this calendar year, the deterministic solar-term range begins July 23, 2026 to August 7, 2026. The next term marks the end of this window.

What is Major Heat used for in this product?

It is a deterministic seasonal reference that helps organize general education about routines, not a medical or weather service.

Can this page replace heat-safety advice?

No. Follow local public guidance and seek professional help for health or safety concerns; the page is educational only.

Solar term entity

Major Heat (大暑)

Major Heat (大暑) is the solar-term window from July 23, 2026 to August 7, 2026. Major Heat is the high-summer solar-term window traditionally associated with the strongest heat. Its value is not to prescribe a lifestyle, but to invite realistic planning around local weather, cooling access, outdoor time, and the energy demands of a full season - without claiming the calendar causes any symptom. Reduce friction before it becomes a problem. Keep plans shorter when needed, lean on familiar routines that require fewer decisions, and treat rest as a normal part of a hot or busy day rather than a reward you must earn. High summer asks for adjustment, not endurance contests. Small choices about timing, clothing, meals, and activity can make the day more workable without claiming to treat any condition. 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

July 23, 2026 through the start of August 7, 2026

Yunqi solar term

大暑

Annual movement

岁水太过，寒气流行

Current six-qi step

4. 四之气(主大暑~秋分)

Host and guest qi

太阴湿土 / 太阴湿土

Overlay relation

同气 (相得（顺）)

Three practical ways to meet this window

1.Give high-effort tasks a realistic time limit and plan a quieter follow-up; no productivity protocol is implied.

2.Choose ordinary meals that are easy to prepare and enjoy in your local conditions; this is not a seasonal diet plan.

3.Scale activity to weather, comfort, and safety rather than following a fixed intensity plan, and stop while still comfortable.