Ipdong and the Pig Month: How Saju Winter Begins in November
Learn why winter starts in November in Korean Saju. Ipdong marks the Pig Month and the shift to Water energy that reshapes your Four Pillars chart.

Why Winter Doesn't Start in December (At Least Not in Saju)
Ipdong and the Pig Month mark the real beginning of winter in Korean Saju, and it hits weeks before most people pull out their heavy coats. If you've been following the Western calendar your whole life, this might feel counterintuitive. But in the Four Pillars of Destiny (사주), the seasonal clock runs on solar terms, not calendar months. Winter begins around November 7th or 8th each year, when the energy of the Pig Month (亥月, Hae-wol) takes over. This is when Water element energy starts flooding the chart, and everything shifts.
I've been reading charts for over fifteen years, and this transition is one of my favorite times to talk about because it's so widely misunderstood. People assume winter energy arrives with the first snowfall or when December rolls around. Nah. If you want to know how this seasonal shift actually affects your birth chart and current luck cycles, you can start with a free reading to see where Water sits in your own pillars.
So let's break down what Ipdong actually is, why the Pig Month matters so much, and how this particular slice of the year can quietly rearrange your fortune.
What Is Ipdong (입동)?
Ipdong literally translates to "entering winter" (立冬). It's one of the 24 solar terms (절기, jeolgi) that Saju practitioners use to divide the year. These solar terms don't care about Gregorian calendar dates. They track the sun's actual position along the ecliptic. Ipdong typically falls on November 7th or 8th, though it can shift by a day depending on the year.
Here's the thing. In Korean astrology, the month pillar of your chart isn't determined by the calendar month you were born in. It's determined by which solar term was active. So someone born on November 10th doesn't have a "November" month pillar. They have a Pig Month (亥月) pillar. And someone born on November 3rd? Still in the Dog Month (戌月), which belongs to late autumn.
This distinction matters more than people realize. Getting the month pillar wrong means getting the element balance of your entire chart wrong. I've seen charts that were completely misread because someone used calendar months instead of solar terms.
The Pig Month (亥月): Water Season Opens

The Earthly Branch 亥 (Hae) is the Pig, and its primary element is Water (수, Su). But here's where it gets interesting. The Pig branch also contains hidden stems: primarily Yang Water (壬 Im) with a small amount of Yang Wood (甲 Gap) tucked inside. So when the Pig Month begins, you're not just getting a gentle trickle of Water energy. You're getting the Ocean (壬) with roots (甲) reaching down beneath the surface.
This makes the Pig Month feel heavy. Dense. Introspective.
Water's natural movement is downward and inward. If you think about what happens in nature around early November, things are pulling back. Trees have dropped their leaves. Animals are settling into dens. The energy is literally sinking into the earth. In Saju terms, this is the season where Water element starts to dominate, and it will only intensify through the Rat Month (子月, December) and Ox Month (丑月, January).
For anyone whose Day Master (일간, Ilgan) has a strong relationship with Water, this is when the year gets real.
How Ipdong Affects Different Day Masters
Not everyone experiences the Pig Month the same way. Your Day Master determines how this surge of Water energy interacts with your core identity.
Water Day Masters (壬 Im, 癸 Gye)
If you're a Yang Water or Yin Water Day Master, the Pig Month essentially amplifies who you already are. More Water piling onto Water. This can feel empowering if your chart was dry and needed moisture. But if your chart already runs Water-heavy, this is where things can overflow. Too much Water with no Earth to contain it? That reads like scattered thinking, emotional overwhelm, or difficulty making decisions. Yang Water (Im, the Ocean) might feel restless and boundary-less. Yin Water (Gye, the Rain) might withdraw completely.
Fire Day Masters (丙 Byeong, 丁 Jeong)
Water controls Fire. That's the controlling cycle (상극) at work. So the Pig Month can feel like pressure on Fire Day Masters. The Blazing Sun (丙) might find their usual charisma muted, like clouds rolling in. The Candle Flame (丁) might struggle with moodiness or feel like their inner fire keeps getting snuffed out. This isn't inherently bad, though. If a Fire Day Master's chart runs too hot (too much Fire, not enough counterbalance), this Water energy can actually be the Useful God (용신, Yongsin) they need. Context is everything.
Wood Day Masters (甲 Gap, 乙 Eul)
Water feeds Wood in the productive cycle (상생). So the Pig Month can be nourishing for Wood Day Masters. Think of rain feeding roots in preparation for spring growth. Yang Wood (Gap, the Towering Tree) absorbs this energy and builds structural strength beneath the surface. Yin Wood (Eul, the Vine) might feel emotionally replenished. But remember: too much water drowns a plant. If a Wood chart already has excessive Water, the Pig Month can create that waterlogged feeling where nothing actually grows.
Earth Day Masters (戊 Mu, 己 Gi)
Earth controls Water (Earth dams Water), so Earth Day Masters are in an active controlling position during this month. Yang Earth (Mu, the Great Mountain) might feel called to take charge, contain situations, or provide structure for others. Yin Earth (Gi, the Garden Soil) might absorb too much of the Water energy (absorbing others' problems is already their tendency). The key: controlling costs the controller energy. Earth Day Masters can feel drained by December if they don't pace themselves.
Metal Day Masters (庚 Gyeong, 辛 Sin)
Metal produces Water. In the productive cycle, Metal feeds Water (cold metal gathers condensation). So Metal Day Masters might feel their energy draining outward during the Pig Month. The Sword (庚) could feel like their usual decisive edge is being washed away. The Jewel (辛) might feel less sparkly, more dull. Producing always costs the producer. This is a month where Metal Day Masters benefit from pulling back and conserving.
The Pig Month in Your Annual Fortune (연운)
Beyond the birth chart, the Pig Month interacts with whatever Annual Fortune (연운, Yeonun) is active. Say we're in a Wood year. Water produces Wood, so the Pig Month in a Wood year amplifies the year's energy significantly. The month becomes fuel for the annual theme.
In a Fire year? The Pig Month creates tension with the annual energy. Water clashing against Fire. This can manifest as external conflicts, sudden changes, or the need to pivot.
This is also where Grand Fortune (대운, Daeun) cycles matter. If someone is running a Water Grand Fortune and hits a Pig Month during a Water year, that's a triple Water stack. I usually slow down when I see configurations like that, because the flooding risk (metaphorical and sometimes literal, in terms of emotional overwhelm) is significant.
Why Saju Seasons Don't Match What You Expect
People often ask me why Saju doesn't just follow meteorological seasons. The answer is rooted in how energy transitions actually work.
Saju's seasonal model tracks energetic momentum, not temperature readings. By the time it's freezing cold outside in December and January, the Water energy is at its peak. But energy doesn't just appear at full strength. It needs a runway. The Pig Month is that runway. It's the beginning of the downward, inward pull. The cold is coming, but the energetic foundation for winter is being laid in early November.
Think of it like this: by the time everyone "feels" winter, the energetic pattern has been running for weeks. Saju catches the start of the wave, not the crest.
This is also why the Pig Month can feel so disorienting for people who are energy-sensitive. The external world still looks like autumn (leaves on the ground, maybe some warm days), but the underlying current has already changed direction. If you've ever felt an inexplicable heaviness or introspective pull in early November that you can't attribute to anything specific, well, now you know.
The Pig's Hidden Wood: A Seed in the Cold
One detail that often gets overlooked: the Yang Wood (甲 Gap) hidden inside the Pig branch. This is subtle but meaningful. Even as Water energy takes over, there's a seed of Wood buried within it. Growth potential stored inside the coldest, most inward-pointing energy of the year.
In practical terms, this means the Pig Month isn't purely about retreat and shutdown. There's planning energy here. Strategic thinking. The kind of quiet preparation that looks like nothing from the outside but becomes the foundation for spring's explosive growth. If you're someone who wants to understand how these hidden stems work in your own chart, a free Saju ebook can help you build that foundation.
This hidden Wood also creates a natural connection between the Pig Month and the Tiger Month (寅月, February), which is when spring begins in Saju. The Wood planted in November's darkness reaches upward toward February's light. There's a beautiful symmetry to it.
Practical Tips for the Pig Month
Based on what I've observed over years of practice, here's what tends to work well during this period:
Lean into reflection. Water energy rewards introspection. Journaling, meditation, reviewing your year so far. This is prime time for it. Some people report vivid or meaningful dreams during the Pig Month, which tracks with Water's connection to the subconscious. If that's happening to you, a Korean dream dictionary might help you decode what's coming through.
Don't force big launches. The energy is pulling inward, not outward. Starting something brand new during peak Water season can feel like swimming upstream. Better to plan now and launch when Wood or Fire energy returns.
Watch your emotional boundaries. Water is the element of fear and emotional depth. The Pig Month can stir up anxiety, old memories, or a general sense of unease, especially for charts that already carry heavy Water. Recognize it as seasonal energy, not a permanent state.
Hydrate and rest. I know this sounds basic, but Water season literally asks you to honor Water in your body. Sleep more. Drink more water. Slow down. Your chart will thank you.
Frequently Asked Questions
When exactly does the Pig Month start in Saju?
The Pig Month begins at Ipdong (입동), which typically falls on November 7th or 8th. The exact date shifts slightly each year because it's based on the sun's position, not the Gregorian calendar. It runs until Daeseol (대설, Major Snow), around December 7th, when the Rat Month takes over.
Does being born in the Pig Month mean I have a lot of Water in my chart?
It means your month branch is 亥 (Hae), which carries strong Water energy with hidden Yang Water and Yang Wood stems. But your overall elemental balance depends on all four pillars (year, month, day, hour), not just one. Someone born in the Pig Month could still have a Fire-dominant chart if their other pillars carry heavy Fire and Wood.
Is the Pig Month bad for Fire Day Masters?
Not automatically. Water controlling Fire can be challenging, but if a Fire Day Master's chart is excessively hot (too much Fire with no balance), the Pig Month's Water energy might actually serve as the Useful God (용신) they need. Whether it's "bad" or "good" depends entirely on the full chart context. Blanket statements like "Water month = bad for Fire" are way too simplistic.
How is the Saju Pig Month different from the Chinese zodiac Pig Year?
The Pig Month is a 30-day period of Water energy within a single year, governed by the Earthly Branch 亥. A Pig Year means the entire year carries Pig energy in the year pillar. They share the same branch and elemental associations, but the scope and impact are very different. A Pig Month affects your monthly fortune; a Pig Year shapes the annual fortune (연운) for everyone.
The Pig Month is one of those quiet turning points that most people sleep through. But if you understand what's happening energetically, you can work with the current instead of against it. Water season has its gifts: clarity through stillness, wisdom through patience, strength through depth.
Curious how this November's Water energy lands in your specific chart? Your Day Master, element balance, and current Grand Fortune all shape the experience.
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