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Real-time countdown to the exact start of the first day of fall.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This page counts down to Liqiu, also called the Start or Beginning of Autumn in the Chinese 24 solar terms. The term is defined by the Sun reaching 135° of ecliptic longitude. It is a calendar and astronomy marker; in the United States it does not mean that local temperatures, foliage, or weather will change on that date.
Select a year to see its Liqiu date, a lunar-calendar date for reference, and the remaining days, hours, minutes, and seconds. The countdown is a time difference between the selected target moment and your device’s current clock. Since the target is an astronomical moment, its Gregorian date and clock time can differ from year to year. A date shown for one year should not be reused as a fixed annual date.
The paired calendar dates answer different questions: the Gregorian date locates the event in the civil calendar, while the lunar date provides a traditional calendar reference. Neither the lunar date nor local seasonal weather changes the 135° definition.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
The page starts with the next Liqiu occurrence. Use the year selector to view another year, including a past year or a future one.
Read the displayed Gregorian and lunar-calendar dates, then the remaining time. When the selected year’s event is already past, the page marks it as elapsed and lets you move to the next year.
The countdown compares the target moment with the time reported by your device. Check your device date, clock, and time-zone settings if the result looks unexpected. The on-screen timer refreshes each second.
For an event invitation or publication, record the year and verify the exact local date and time with an authoritative astronomical calendar for the intended time zone.
Use cases
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Check the upcoming Liqiu date before adding a seasonal note or reminder. Use the displayed year explicitly so an event does not drift when the calendar rolls over.
Editors can use the selected year as a starting point, then confirm its exact time and time zone before publishing. The 135° definition helps distinguish Liqiu from the US meteorological or astronomical fall season.
Compare the Gregorian and lunar-calendar dates for different years and use the countdown to introduce the idea of an astronomical instant. Local weather observations remain a separate topic.
Q&A
Find concise answers to common questions and confusing cases.
No. This page refers to Liqiu in the Chinese solar-term calendar. It does not calculate the US astronomical equinox or predict a local seasonal change.
The term is tied to the Sun’s position rather than a fixed Gregorian month and day, so its civil-calendar date and clock time vary by year.
The page shows that the selected occurrence is over and offers a way to switch to the next year. On initial load it advances to the next occurrence if the current year’s moment has passed.
The timer uses each device’s current clock. Check its time and time zone; a countdown is only as aligned as the device time and the target-time interpretation.
Notes
Review scope, result limitations, and important precautions before use.
Liqiu marks a solar position in a traditional calendar. It does not establish when autumn weather begins in a particular US state, when leaves change, or when a growing season ends. Use local forecasts and local sources for those questions.
The countdown depends on the device clock and time-zone context. If you need an exact time for a formal schedule, verify the selected year against an authoritative astronomical calendar that states its time zone.
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