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Calculate the remaining days until the Major Heat (Dashu) solar term in real time and use traditional solar term timing to plan your schedule.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
Dashu (also written Dàshǔ and translated as Major Heat) is one of the traditional Chinese 24 solar terms. The name refers to a point in the calendar organized around the Sun’s yearly motion; it is not a US heat advisory or a forecast for local temperatures. A solar term occurs at a particular time, so its Gregorian date can differ slightly from year to year and can appear on different local calendar dates in different time zones.
This countdown shows the selected year’s Dashu date, a lunar-calendar label, and the remaining days, hours, minutes, and seconds. The selected year lets you look ahead or revisit a prior calendar entry. UNESCO describes the solar-term system as knowledge developed through observing the Sun’s annual motion. The Hong Kong Observatory’s 2026 almanac, for example, lists Dashu at 03:13 on July 23 Hong Kong time.
Guide
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The page initially moves to the next upcoming Dashu. Use the year control if you want to inspect another occurrence.
Read the Gregorian date for ordinary scheduling and the lunar date as a traditional calendar label. They describe the same solar-term occurrence, not two separate events.
The days, hours, minutes, and seconds count toward the displayed occurrence. When it has passed, the countdown stops instead of showing a negative timer. Calendar and share controls can help you carry the displayed event into another schedule.
For example, if planning a cultural calendar activity for next summer, first set the intended year and note the date shown. Before inviting people in different regions, confirm the time zone and local date on the calendar entry they will use.
Use cases
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Use the year selector to find when Dashu falls in a future year, then save or share the event and check the receiving calendar’s time-zone display.
Compare the solar-term name, Gregorian date, and lunar label when explaining how a seasonal calendar differs from a fixed-date holiday.
Share the selected occurrence with a group, then agree on the local calendar time before scheduling a meeting or activity.
Q&A
Find concise answers to common questions and confusing cases.
No. It is tied to a solar-term point in the yearly calendar, so check the selected year rather than assuming a fixed July date.
No. “Major Heat” is an English rendering of Dashu’s name. The countdown marks a calendar event and says nothing about the temperature or heat risk where you live.
Published almanacs may state a time in a named time zone, while your calendar may display it in your device’s zone. Compare the time-zone labels as well as the date.
Notes
Review scope, result limitations, and important precautions before use.
Use this as a calendar reference. It does not predict heat, rainfall, growing conditions, or travel safety. For local conditions, consult your weather service; for formal scheduling, confirm the event time and time zone in the calendar source you rely on.
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