Free tool
Chinese Calendar Converter
Turn any Western date into the Chinese lunar date, zodiac animal and stem-branch year — and see when the festivals fall that year.
The Chinese calendar is one of the world’s oldest timekeeping systems still in everyday use — and if you’re planning a trip to China, it’s the hidden engine behind every date that matters. It tells you when the whole country shuts down for Spring Festival, why your favorite festival lands on a different Western date each year, and which animal “rules” the year you arrive. Understanding it isn’t trivia; it’s how you avoid booking a hotel during the most expensive, most crowded week of the year by accident.
Solar, Lunar, and Lunisolar: Which One Is the Chinese Calendar?
There are three ways a calendar can be built. A solar calendar (like the Gregorian one the West uses) follows Earth’s orbit around the Sun — 365 days, with the seasons locked in place. A purely lunar calendar (like the Islamic Hijri calendar) follows only the Moon’s phases, so its year is about 354 days and drifts backward through the seasons. The Chinese calendar is lunisolar: it counts months by the Moon but keeps the year tied to the Sun. This dual nature is the single most important thing to understand — almost everything confusing about Chinese dates traces back to it.
How a Lunar Month Works
Each month in the Chinese calendar begins on a new moon (when the Moon is invisible) and runs until the next new moon. One lunar cycle averages about 29.5 days, so months alternate between 29 days (“short” months) and 30 days (“long” months). The full moon reliably falls around the 15th day of every month — which is exactly why several major festivals (Lantern, Mid-Autumn) land on the 15th: they’re designed to coincide with a bright full moon.
Why a Common Year Is Shorter Than a Solar Year
Twelve lunar months add up to roughly 354 days — about 11 days shorter than the 365-day solar year. Left uncorrected, the calendar would slide backward against the seasons, and “spring” festivals would eventually drift into winter, then autumn. A purely lunar calendar accepts this drift. A lunisolar calendar refuses to — and that refusal is what creates leap months.
Leap Months: The Calendar’s Self-Correction
To stop the 11-day annual gap from accumulating, the Chinese calendar inserts an extra “leap month” (闰月) every so often. The rule of thumb: roughly 7 leap months are added every 19 years. (This is the same 19-year cycle the ancient Greeks discovered independently — 19 solar years almost exactly equal 235 lunar months.) In a leap year the calendar has 13 months and stretches to about 384 days. The leap month repeats the number of the month before it — so you might get a “fourth month” followed by a “leap fourth month.” This is also why some people born in a leap month can technically celebrate two lunar birthdays.
The 24 Solar Terms (节气)
Running underneath the lunar months is a purely solar framework: the 24 solar terms, which divide the Sun’s annual path into 24 equal segments of about 15 days each. These terms — names like Start of Spring (立春), Grain Rain (谷雨), and Winter Solstice (冬至) — were the farmer’s almanac of ancient China, signaling when to plant, harvest, and prepare for cold. They’re the “solar” half of “lunisolar,” and they’re fixed to the Gregorian calendar within a day or two every year, unlike the lunar festivals.
| Season | Example solar terms | Approx. Gregorian window |
|---|---|---|
| Spring | Start of Spring, Awakening of Insects, Qingming | early Feb – early May |
| Summer | Start of Summer, Summer Solstice, Great Heat | early May – early Aug |
| Autumn | Start of Autumn, White Dew, Cold Dew | early Aug – early Nov |
| Winter | Start of Winter, Winter Solstice, Great Cold | early Nov – early Feb |
The Sexagenary Cycle: 60 Years, Not 12
Westerners often think the Chinese zodiac is a simple 12-year wheel of animals. The real system is the sexagenary cycle: a combination of 10 Heavenly Stems (天干) and 12 Earthly Branches (地支). Because 10 and 12 share a common factor, the stems and branches pair up in a repeating sequence that takes 60 years to return to the start. Each year carries a stem-branch name (the widget above shows yours) — 2026 is bǐngwǔ (丙午). The familiar 12 animals are the Earthly Branches dressed in animal form, which is why the zodiac repeats every 12 years while the full stem-branch label repeats every 60.
The Zodiac Year and What Animal You Are
The 12 zodiac animals — Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig — cycle one per year. 2026 is the Year of the Horse; 2027 is the Year of the Goat. Note one trap for travelers: the zodiac year flips on Chinese New Year, not January 1. So a baby born in late January or early February might belong to the previous year’s animal — the widget above resolves this automatically by converting to the true lunar date. (For a deeper dive, see our Chinese zodiac calculator.)
Why Festival Dates Move Every Western Year
Here’s the practical payoff. Most major Chinese festivals are pinned to a fixed lunar date (e.g., “the 5th day of the 5th lunar month”). Since the lunar year is ~11 days shorter than the solar year, that fixed lunar date lands on a different Gregorian date annually — usually drifting earlier each year until a leap month resets it later. That’s why Chinese New Year can fall anywhere from late January to late February, and why you can never assume “last year’s date” will work for planning.
Major Festivals at a Glance (2026 & 2027)
Note that Qingming is the exception: it’s tied to a solar term, so it sits on April 4–5 almost every year, while the lunar festivals jump around.
| Festival | Lunar date | 2026 (Gregorian) | 2027 (Gregorian) |
|---|---|---|---|
| Spring Festival (Chinese New Year) | 1st day, 1st month | Feb 17 | Feb 6 |
| Lantern Festival | 15th day, 1st month | Mar 3 | Feb 20 |
| Qingming (Tomb-Sweeping) — solar term | ~solar term | Apr 5 | Apr 5 |
| Dragon Boat (Duanwu) | 5th day, 5th month | Jun 19 | Jun 9 |
| Qixi (Chinese Valentine’s) | 7th day, 7th month | Aug 19 | Aug 8 |
| Mid-Autumn (Mooncake) | 15th day, 8th month | Sep 25 | Sep 15 |
| Double Ninth (Chongyang) | 9th day, 9th month | Oct 18 | Oct 8 |
The Traveler’s Angle: Crowds That Move Each Year
This calendar is the reason China’s two great travel crushes — Spring Festival and the National Day Golden Week (Oct 1, fixed) plus the days around Mid-Autumn — shift on the Western calendar and sometimes collide. During Chinese New Year, hundreds of millions of people travel home in the world’s largest annual human migration; trains sell out, prices spike, and many small businesses close for a week or more. Because these windows move, you can’t rely on intuition. Always check the lunar dates against your travel month before booking flights and hotels — see our guide to the best time to visit China for a month-by-month breakdown.
How to Convert a Date (What the Widget Above Does)
Converting between Gregorian and Chinese dates by hand means tracking new moons, solar terms, and leap-month rules — genuinely hard. The interactive tool at the top of this page does it instantly: feed it any Western date and it returns the lunar date, the zodiac animal, the stem-branch year, and the festivals in that lunar year. Use it to check what animal a birth year belongs to, or to see exactly when a festival lands in a year you’re planning to visit.
Is the Calendar Still Used Today?
Yes — China runs on the Gregorian calendar for business and government, but the traditional calendar remains alive for everything cultural. It sets the dates of every traditional festival and public holiday, defines the zodiac year people identify with, and is still consulted for auspicious-date picking (择日) — choosing lucky days for weddings, business openings, moving house, and funerals. As an authoritative reference puts it:
“The Chinese calendar is lunisolar. It is based on exact astronomical observations of the longitude of the Sun and the phases of the Moon… Unlike the Gregorian calendar, the Chinese calendar reflects the cycle of the seasons through its solar terms.”
For a foreign traveler, the lesson is simple: the Western calendar tells you the day, but the Chinese calendar tells you what that day means — and whether half a billion people will be on the move.