TWICE · Bias match
Korean Saju reads compatibility from two birth charts — not sun signs. Enter your birthday and see your match type with Sana in 10 seconds. Free.
Sana is The Quenched Blade — a Yang Metal Day Master (the core element of their Four Pillars). That's the chart we'll read yours against.
| Pillar | Stem | Branch |
|---|---|---|
| Year | 丙 Byeong · Yang Fire | 子 Ja · Rat · Water |
| Month | 庚 Gyeong · Yang Metal | 子 Ja · Rat · Water |
| Day | 庚 Gyeong · Yang Metal | 子 Ja · Rat · Water |
| Hour | Unknown (birth time not public) | |
| Wood | Fire | Earth | Metal | Water |
|---|---|---|---|---|
| 0 | 1 | 0 | 2 | 3 |
Birthday: Korean Wikipedia and English Wikipedia give the same date (checked October 20, 2026). Pillars: Palja's manseryeok engine, year and month switching at the exact solar term.
Free · your birthday stays on your device
Sana was born on December 29, 1996. Sana's birth time is not public, so Sana's Saju chart has three pillars (year, month and day) instead of four.
Sana's pillars are 丙子 (Byeong-Ja) year, 庚子 (Gyeong-Ja) month and 庚子 (Gyeong-Ja) day. The Day Master is Yang Metal (庚 Gyeong), and the six characters hold 3 Water, 2 Metal, 1 Fire, 0 Wood and 0 Earth.
Saju (사주, "Four Pillars") maps your birth date and time to five elements. Compatibility compares two people's day pillars — the part that rules relationships — to score chemistry, stability, growth and friction. Sana's chart is fixed; yours is calculated live in your browser (your birthday never leaves your device).