K-pop idol Saju profiles

Saju (사주, “four pillars”) is Korean astrology. It turns a birth date and time into four pillars (year, month, day, hour), each made of a heavenly stem and an earthly branch, and reads the balance of the five elements: Wood, Fire, Earth, Metal, and Water.

The Day Master is the heavenly stem of the day pillar. It stands for the core self, and the rest of the chart is read in relation to it. There are ten Day Masters, from Yang Wood to Yin Water.

Two charts are compared on how their Day Masters combine, whether their elements feed or clash, and how their day branches get along. OtterPrism scores this on four axes (Spark, Fit, Sync, Depth) plus an overall chemistry score from 40 to 99.

They use the same Four Pillars of Destiny chart. BaZi (“eight characters”) is the Chinese name; Saju is the Korean name and the Korean tradition of reading it.