How to Use the 24 Solar Terms Calculator
The 24 solar terms are a traditional East Asian solar calendar system, still referenced today in Korea, China, and Japan for seasonal awareness, farming schedules, and folk customs. This calculator only needs a year to display all 24 terms with their dates, from Minor Cold in January to Major Cold at year's end, plus how many days remain until the next one from today.
The system divides the year into 24 segments of about 15 days each, based on the sun's position along the ecliptic (its apparent path through the sky). Terms like Start of Spring (Ipchun), Summer Solstice (Haji), and Winter Solstice (Dongji) mark well-known seasonal turning points that are still woven into everyday language and seasonal customs across the region, even outside agricultural contexts.
Because each term is defined by the sun's actual position rather than a fixed calendar date, the exact date can shift by about a day from year to year. This calculator uses commonly cited representative dates as a simplified reference, so for occasions where the precise day matters, cross-check with an official regional almanac for that specific year.
Frequently Asked Questions
They're a traditional East Asian solar calendar system that divides the year into 24 segments based on the sun's position, used for centuries in Korea, China, and Japan to track farming seasons and mark the change of seasons.
Since each term is set by the sun's actual position, dates can shift by about a day from year to year. This calculator uses commonly cited representative dates, so it may differ by up to a day from the precise date in a given year.