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Results for "24 solar terms"
Open datasetThe 24 solar terms
- The solar date each of the 24 terms begins, for every year from 2020 to 2035, computed from solar longitude in Vietnam time.
- 384 rows, 10 columns
- Version 1.1.1, updated 2026-09-30
- Licensed CC BY 4.0, reusable with attribution
Why are there 24 solar terms?
Because each term corresponds to about 15 degrees of ecliptic longitude, and 360 degrees divided by 15 equals 24.
From the article “What is Tiết khí?”
Calendar and astronomy
StartLunar-solar converter
Convert lunar and solar dates both ways, with leap months and solar terms.
Vietnamese lunar calendar
Today's lunar date, what day it is and its good hours, or any other day.
Western zodiac (Sun sign)
Which zodiac sign you are, with a line for today.
The Twenty-Four Solar Terms: Why the Solar Calendar Lives Inside the Lunar Almanac, and Why It Ties to Farming
The 24 solar terms are seasonal markers tied to Earth's orbit around the Sun, used as a farming guide in the lunar almanac.
What is Tiết khí?
Solar terms are 24 markers dividing the year by the Sun's position on the ecliptic, used in East Asian calendrics to determine seasons and festivals.
Dong Chi and Tết Đông Chi: the shortest day of the year, che troi nuoc, ancestor worship, and why Dong Chi was once the year's starting point
Dong Chi is the 22nd solar term and the shortest day of the year. For the Chinese community it is Tết Đông Chi, a time for che troi nuoc and ancestor worship.
What Is Vũ Thủy, the Rain Water Solar Term, When Does It Start, and What Customs Does It Have?
Vũ Thủy, second of the 24 solar terms, marks damp rain and warming soil after winter. This explains its dates, meaning, and folk customs.
What Is Hàn Lộ Solar Term, When Does It Begin, and What Customs Does It Have?
Hàn Lộ is the 17th of the 24 solar terms, beginning around October 8 when the Sun reaches 195 degrees. Learn its meaning and customs.
What Is Mang Chủng Solar Term, When Does It Begin, and What Customs Are Observed?
Mang Chủng is the 9th of the 24 solar terms, usually starting around June 5 or 6 as Tiểu Mãn ends. Its meaning, calendar role, and customs explained.
What Is Đại Hàn, When Does It Begin, and What Customs Are Observed?
Đại Hàn is the last of the 24 solar terms, at solar longitude 300 degrees and lasting about 15 days. Here its calculation, customs, and meaning are explained.
What Is Tiểu Thử (Minor Heat)? When Does It Begin and What Customs Are Associated With It?
Tiểu Thử usually begins on July 7 and opens the Mùi month. Start times for 2025 to 2030, the meaning of its name and what classical books record.
When Does Thu Phân Begin and What Customs Mark It? A View from Sui Shi Guang Ji and Calendrical Science
Thu Phân, the 16th of the 24 solar terms, begins on 22 to 24 September as the Sun enters the Thọ Tinh station. Its calendar roots and customs, explained.
What Is Tiểu Mãn, When Does It Begin, and What Customs Come With It?
Tiểu Mãn, the 8th solar term, begins on 20 or 21 May when the Sun reaches 60 degrees longitude. In 2026 it starts at 07:28 on 21 May, Vietnam time.
What Is Lập Thu, When Does It Begin, and What Customs Come With It?
Lập Thu, tiết khí thứ 13, đánh dấu chuyển hạ sang thu. Bài giải thích cách tính ngày, ba hậu, gốc tích trong Tuế thời quảng ký và tục lệ.
What Is Bạch Lộ (White Dew), When Does It Begin, and What Customs Come With It?
Bạch Lộ (White Dew), the 15th solar term, starts around 7 or 8 September as night vapour condenses into white dew, marking mid-autumn in the calendar.
When does Cốc Vũ begin and what customs come with it? Calculation and meaning in the traditional calendar
Cốc Vũ, the sixth solar term beginning 19 or 20 April, marks the rains that feed the rice. Its calculation, meaning and folk customs are explained.
What Is Đại Thử (Major Heat), When Does It Begin, and What Customs Come With It?
Đại Thử, the 12th solar term and mid-term of the sixth lunar month, begins when the Sun reaches 120 degrees, on 22 or 23 July. Start times 2025 to 2030.
What Is Đại Tuyết, When Does It Begin, and What Customs Are Observed?
Đại Tuyết, the 21st solar term, begins at solar longitude 255 degrees, usually on 7 December, opening the Tý month. Start times 2025 to 2030, Vietnam time.
When Does Hạ Chí Begin and What Customs Does It Have?
Hạ Chí begins when the Sun reaches 90 degrees of solar longitude; from 2012 to 2043 it falls on 21 June, Vietnam time. Start times 2025 to 2030, old customs.
Converting Lunar Dates to Solar Dates: What the Calculation Is Based On, and Why It Is Not a Fixed Addition and Subtraction Table
Lunar to solar conversion uses no fixed addition table. It relies on the new moon point, major solar terms and legal time zones, so it differs year by year.
What is 24 Sơn Hướng?
24 Sơn Hướng is a system of 24 positions on the feng shui compass, each spanning 15 degrees, used to determine the orientation of houses and graves.
Tam nguyên and the 18 Ju of Qimen: How to Derive the Ju Number from Solar Terms According to the Source Texts
Tam nguyên splits each solar term into three five-day spans, each with one Kỳ Môn cục. The 24-term table follows the Hiệp kỷ biện phương thư.
Which month is good for having a child? Why does Bát Tự change months by solar terms while Tử Vi uses lunar months?
No birth month is best for everyone: Bát Tự reads the month by solar terms, Tử Vi by lunar months, and folk sayings on good birth months lack a firm basis.
Nham Mountain Direction in the 24 Mountain Directions of Feng Shui - Meaning and Interpretation
Nham mountain sits in the North of the 24 mountain directions, tied to the Water element and the Kan trigram, symbolizing beginnings, wisdom and flexibility.
Geng Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Geng mountain in the 24 mountain directions: its Metal element, western position, compass degrees, and meaning for house and tomb feng shui.
Gen Mountain Direction in the 24 Mountain Directions of Feng Shui - Meaning and Interpretation
Gen Mountain in the 24 mountain directions: its Earth element, Northeast palace, and meaning for house direction and altar placement.
Gui Mountain in the 24 Feng Shui Directions: Meaning and Interpretation
Gui Mountain in the 24 feng shui directions sits in the Gen palace, linked to the Water element and spanning 15 to 30 degrees.
Chen Direction in the 24 Feng Shui Directions: Meaning and Interpretation
Chen direction in the 24 feng shui directions: its Earth element, Zhen trigram link, and what this direction means for career and wealth.
Chou Mountain in the 24 Mountains Feng Shui: Meaning and Interpretation
Chou Mountain in the 24 Mountains: its position at 30 degrees, Earth element, and how to judge fortune when sitting or facing Chou in feng shui.
Tuất Direction in the 24 Directions of Feng Shui: Meaning and In-Depth Interpretation
Tuất sits in the Càn palace with the Earth element. Its meaning, trine and Three Sha ties, and use in pole setting and star chart placement are all examined.
Dan Mountain in the 24 Feng Shui Directions: Meaning and Interpretation
Dan Mountain sits at 60 degrees in the 24 feng shui directions, a Wood element point tied to beginnings and growth, with its own Yang energy and hours.
Xun Mountain in the 24 Mountains Feng Shui: Meaning and Interpretation
Xun Mountain in the 24 Mountains system sits in the Xun palace (Southeast) and belongs to Wood. Here is its meaning and its combinations.
Mao Mountain in the 24 Mountain Directions of Feng Shui: Meaning and In-Depth Interpretation
Mao Mountain in the 24 mountain system sits due East with the Wood element. Its meaning when sitting or facing depends on how it combines with other factors.
Tan Mountain Direction in the 24 Feng Shui Mountains: Meaning and Interpretation
Tan Mountain in the 24-mountain feng shui system: its Metal element, western position, and use with Hai and Mao mountains to assess career and fame.
Ty Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Explore the Ty mountain in the 24 mountain directions: position, element, trigram, how to determine it, meanings, and good/bad combinations.
The Wu (Ngọ) Direction in the 24 Directions of Feng Shui: Meaning and Interpretation
The Wu (Ngọ) direction in feng shui sits due south, spans 172.5 to 187.5 degrees and belongs to the Fire element, symbolizing brightness, fame and wisdom.
Dinh Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Dinh mountain sits in the Xun trigram, Wood element, Yin nature, between 157. 5 and 172. 5 degrees on the feng shui compass.
Shen Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Shen mountain direction in the 24 mountain directions: its Water element, Kun palace position, and use in assessing house and grave orientations.
Khon Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Khon Mountain in the 24 mountain directions: its Yin Earth element, Shen-Zi-Chen trine group, and reading sitting Khon facing Gen.
Bing Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Bing mountain direction sits in the Li trigram and belongs to the Fire element in the 24 mountain directions of feng shui.
Qian Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Qian mountain in the 24 mountain directions of Feng Shui: its West Group position, Metal element, and how it combines with other directions and time periods.
Giap Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and Interpretation
Giap mountain sits in the due East, is a yang Wood stem in the Hai-Mao-Wei trine, and anchors the Wood bureau. Here is its meaning across feng shui schools.
Hợi Mountain Direction in Feng Shui's 24 Mountains: Meaning and In-Depth Interpretation
The Hợi mountain in the 24 mountain directions system: its position, five elements, energy, and good and bad configurations in feng shui practice.
Si Mountain in the 24 Mountains of Feng Shui: Meaning and In-depth Interpretation
Si Mountain sits in the Xun trigram, belongs to Fire, and spans 112.5 to 127.5 degrees. See how it guides house orientation and five-element interactions.
Dậu Direction in the 24 Directions of Feng Shui: Meaning and In-Depth Interpretation
The Dậu direction in the 24-direction feng shui system sits due West and belongs to the Metal element. Here is its meaning for house and grave orientation.
The Yi Mountain in the 24 Mountains of Feng Shui: Meaning and In-Depth Interpretation
The Yi Mountain in the 24-mountain system: its position, Wood element, stems and branches, Na Jia trigram link, and how to read it for homes or burials.
Wei Mountain Direction in the 24 Mountain Directions of Feng Shui: Meaning and In-depth Interpretation
Wei Mountain sits in the Xin Wei palace of the 24 mountain directions, tied to the Earth element and Kun trigram. Its meaning and school interpretations.
How to Read Two Major Stars Sharing a Palace in Tử Vi, and Why Are There Exactly 24 Combinations?
Why 14 major stars form only 24 same-palace combinations, the six groups led by Tử Vi and Phủ Tướng Sát Tham Phá, and how to read each pair correctly.
Vietnam Culture Day November 24: Why This Date, Resolution 28/2026/QH16 and the Right to Fully Paid Leave from 2026
Vietnam Culture Day falls on November 24 each year, approved by the 16th National Assembly on April 24, 2026, with fully paid leave for workers.
The 24 solar terms
The solar date each of the 24 terms begins, for every year from 2020 to 2035, computed from solar longitude in Vietnam time.
Start moments of the 24 solar terms, 1900 to 2100
The start moment of each solar term across 201 years in Vietnam time, with the solar longitude of the mark and a flag for moments falling close to midnight.