How Today's Fortune Is Calculated in Saju — Iljin, Annual & Monthly Luck

Your daily fortune in Saju is a rule-based calculation: it comes from how today's stem-branch pair — the Iljin — relates to your Day Master through the Ten Gods and the Five Elements. "Your fortune looks good today" may sound like a vague oracle, but in Saju it comes out of a surprisingly clear-cut computation. Enter your birth date and time into Today's Fortune and it works out how today's stem-branch pair relates to your chart — and once you know the mechanics, you can read the result with a much cooler head. This guide walks through what the Iljin, annual, monthly, and 10-year luck cycles are and how "today's fortune" is actually put together, no Saju background required.

At a glance

• If the eight characters you were born with — your Myeongsik, or natal Saju chart — are a fixed map, luck is the time that moves across it.
• From largest to smallest, luck runs in four scales: Daeun (about 10 years) → Seun (one year) → Monthly Luck (one month) → Iljin (one day).
• The Iljin is the day's stem-branch pair, and today's fortune is read from the Ten Gods and Five Elements relationship it forms with your Day Master (you).
• The calculation is deterministic — no AI text generation (LLM) involved. The same person checking the same day always gets the same result.
• See it for yourself: enter your birth date and time into Today's Fortune.

Your chart is the map — luck is the time crossing it

Two things get mixed up all the time in Saju. One is the eight characters (your Myeongsik), fixed at the moment you're born; the other is luck, the flow of time that moves across them. If your Myeongsik is a map that never changes, luck is the passage of time traveling over that map. Two people with the same map can feel very different depending on which stretch of the journey they're currently crossing. So "today's fortune" isn't about your chart itself — it's about how the time called "today" passes over your chart.

The four scales of luck: Daeun, Seun, Monthly Luck, Iljin

Luck divides into four scales, by how long each one holds sway.

Of these, the Daeun starts at a different age and runs in a different direction (forward or reverse) for every person — it's set by the yin-yang of your birth year, your sex, and the distance from your birth date to the nearest solar term. The Seun is the luck of a single calendar year: for 2026, that means reading the energy of a Byeongo (Fire Horse) year. Monthly Luck covers the month, and the Iljin is the day's stem-branch pair. Today's fortune centers on the Iljin, read against the larger backdrop of the annual and monthly luck layered behind it.

How today's fortune is calculated

The heart of it is this: what Ten Gods and Five Elements relationship does today's stem-branch pair — the Iljin — form with your Day Master? Nearly all Saju interpretation boils down to one question: "from the Day Master's (my) point of view, what is this other character?" Today's fortune is no different. The day's Iljin characters are converted into a Ten God relative to your Day Master, which tells you whether that day's energy shows up for you as money, work, expression, or challenge.

The Sipsin (Ten Gods) are the ten relationships another character can form with your Day Master — Bigyeon (Companion), Geopjae (Rob Wealth), Siksin (Eating God), Sanggwan (Hurting Officer), Pyeonjae (Indirect Wealth), Jeongjae (Direct Wealth), Pyeongwan (Seven Killings), Jeonggwan (Direct Officer), Pyeonin (Indirect Resource), and Jeongin (Direct Resource). You don't need to memorize them all; knowing which Ten God today's Iljin lands on is enough for a light read on the day's texture.

• A wealth-star day (Indirect or Direct Wealth): keywords around money, deals, and practical gains come to the fore.
• An output-star day (Eating God or Hurting Officer): keywords around expression, ideas, and activity come to the fore.
• An officer-star day (Seven Killings or Direct Officer): keywords around work, responsibility, and challenge come to the fore.

Don't know your birth time? You can still check — just set aside the hour-related parts. As long as your Day Master is accurate, the basic relationship with the day's Iljin reads the same.

Why the same day always gives the same result

"Today's fortune" sounds like it should deal a fresh card every time, but the calculation is deterministic. Fix the date, and the day's stem-branch pair (the Iljin) is fixed. Fix the birthday, and your Day Master is fixed. The Ten Gods and Five Elements relationship between the two converts by rule, so the same person checking the same day always sees the same result, no matter when they look. Our free tool works this way too: rather than having an AI (LLM) improvise a new reading each time, it computes along these fixed rules. That's why the results never wobble.

Frequently asked questions

Is an animal-sign daily fortune different from a Saju daily fortune?

Yes — they look at different amounts of information. Animal-sign fortunes sort everyone into just twelve groups using a single character, the branch of your birth year, so they're the simple version. A Saju-based daily fortune reads today's Iljin against your own Day Master, which makes it far more personal. Two people with the same animal sign can get different results if their Saju differs.

How is today's fortune different from a New Year fortune?

They work at different timescales. A New Year fortune is closer to the Seun (Annual Luck), taking in the year as a whole, while today's fortune centers on the Iljin — a single day. Even with the same big-picture backdrop (Daeun and Seun), each day's texture shifts with its Iljin.

Why doesn't the result change when I refresh?

Because the calculation follows fixed rules. The same date plus the same birthday means the same stem-branch pair and the same Ten Gods relationship, so within a given day you'll see the identical result no matter how many times you check.

Can I check it without knowing my birth time?

Yes. Just leave out the hour-related parts. As long as your Day Master is accurate, the basic relationship with today's Iljin reads exactly the same.

Does it actually predict good days and bad days?

No. It uses the Ten Gods and Five Elements relationship to surface the day's mood keywords as a reference point — it doesn't prophesy how the day will turn out. Even the same Iljin means different things to different people in different situations.

Saju basics worth a read

• How to read your Saju chart — how the eight characters and your Day Master are determined
• The Ten Gods, fully explained — the ten relationships that decode today's Iljin
• Reading Five Elements balance in Saju — strong vs. weak Day Masters and the Yongsin (useful element)
• How to read your Daeun — the 10-year cycles bigger than any single day

Wrapping up

Today's fortune isn't a mystical prophecy — it's the relationship between today's stem-branch pair and your Day Master, computed by rule and distilled into the day's keywords. Once you know how it works, you can take the result as a light reference instead of letting it sway you. Check today's Iljin for yourself with Today's Fortune. And keep in mind that a Saju reading doesn't fix your fate or your future — it's meant for entertainment and self-reflection, so enjoy the day's read with a light heart rather than treating it as a verdict of good or bad luck.