DAY PILLARS · SAJU
Day pillar 甲子 (Gapja): Yang Wood on the Rat
The 甲子 pillar, Gapja, opens the cycle of sixty combinations. Picture a straight tree rooted above cold, deep water that quietly feeds it while the rest of the landscape is still asleep.
1. The image
Above, Yang Wood: a trunk reaching for the vertical. Below, the Rat, a Water branch, in the heart of winter. Water feeds wood: in this image, the root finds something to drink even when nothing grows on the surface. The hidden stem 癸, a fine water, strengthens this quiet support, which we call here the protective resource. The nayin 海中金, “Metal at the Bottom of the Sea”, adds the idea of real worth, still submerged, that doesn’t need to be seen in order to exist.
2. Your birth element: Yang Wood
Yang Wood is the image of the tall tree growing straight toward the light. You may recognize yourself in this need to have a direction and to grow at your own pace. Once you’re on your way, you hold your line, even when others hesitate. The flip side: giving way costs you, even when a small detour would be simpler.
Read the portraits of the ten elements
3. What it rests on: the Rat
The Rat is a Water branch, the branch of midwinter, around December, when the nights are longest. It hides only one stem, 癸, Yin Water: a pure, concentrated seat. In this image, the base of the pillar is lively, discreet, turned toward listening and reflection.
Protective resource is the element that feeds the stem, with the opposite polarity: a gentle support, like a hand resting on your shoulder. The tradition associates it with learning, kindness, the need for a reassuring home. On this seat, you know how to receive and pass things on. The flip side: waiting to be carried before you dare. The lever: trust yourself a little sooner.
4. In daily life
You may recognise yourself in someone who reads, listens and takes notes before launching anything. In a meeting, you wait until you’ve grasped the substance before speaking, and what you say often lands in the right place. This need for reserves makes you solid when a project runs long. The flip side: you can stay in preparation for a long time, piling up reading and opinions, putting off the moment you show what you can do. The tree has had its drink; now it has to grow out of the water.
5. Up close, as a couple
Up close, this image looks for a home that feels like a spring: calm, reliable, a place to recharge without having to explain yourself. You may give plenty of room to listening and quiet evenings. The flip side is receiving other people’s care without always saying what it means to you, or withdrawing into your own world when you need to recharge. Naming that need keeps it from being mistaken for distance.
6. The lever
The lever comes down to one gesture: turning a reserve into a visible shoot. An idea you’ve been nurturing for a long time can be shown to a single person, in an imperfect form, before it’s finished. Yang Wood needs air as much as water; a first version shared with someone gives it that air. This week, what are you quietly preparing that you could let someone you trust read, hear or see?
7. The nayin: Metal at the Bottom of the Sea
海中金, Metal at the Bottom of the Sea: a precious metal still hidden beneath the waters. The tradition sees in it a value that doesn’t show right away. The image suggests an inner richness, patience, qualities that reveal themselves with time and trust.
8. Why this pillar isn’t the whole story
This pillar is only one part of your chart. Saju counts eight signs, spread across the year, month, day and hour of birth. Thousands of people share this same day pillar, since it comes back every 60 days. What changes everything is the rest: the year and month set the scene, the hour adds its nuance, and the balance of the elements draws a chart that is yours alone.
The next 甲子 days
The calendar of days moves forward continuously: here are the next dates when this pillar comes back, for information only.
Frequently asked questions
Is the 甲子 pillar the first in the cycle?
Yes. 甲 is the first of the ten stems and 子 the first of the twelve branches: together they open the cycle of sixty combinations (육십갑자, yuksip gapja in Korean). Being first doesn’t make it better or stronger; it’s simply where the count begins.
Why do people talk about the 11 p.m. rule?
In many Saju schools, the day doesn’t start at midnight but at 11 p.m., at the beginning of the hour of the Rat. If you were born between 11 p.m. and midnight, your day pillar may therefore be the next day’s. Other schools keep midnight. Local solar time can also shift this boundary.
Are two people with the same day pillar alike?
They share the same basic image, but not the same chart. The year, month and hour pillars change the balance of the elements and the way the day expresses itself. Two people with the same pillar can therefore have very different temperaments, each in their own way.