The ten day masters
Your day master (일간 ilgan) is the heavenly stem of your day pillar, the character that stands for you. There are ten, one for each element in a yang and a yin form.
The Tall TreeGap 甲 갑 · yang woodThe Climbing VineEul 乙 을 · yin woodThe SunByeong 丙 병 · yang fireThe Lamp FlameJeong 丁 정 · yin fireThe MountainMu 戊 무 · yang earthThe Tilled FieldGi 己 기 · yin earthThe Raw OreGyeong 庚 경 · yang metalThe Cut JewelSin 辛 신 · yin metalThe Great RiverIm 壬 임 · yang waterThe RainGye 癸 계 · yin water