2026-09-01
What is Daeun (Major Cycles)? Understanding the 10-Year Life Cycles in Four Pillars
If your Four Pillars chart is the energy map of your birth moment, Daeun (Major Cycles/大運) represents the great currents of time flowing through your life afterward. Major Cycles change every 10 years, and depending on which Five Elements and Ten Gods each cycle brings, the overall atmosphere, opportunities, and challenges of that period shift accordingly.
The starting point of Major Cycles varies by chart. Yang-stem males and Yin-stem females progress forward from the Month Pillar, while Yin-stem males and Yang-stem females progress in reverse. The starting age also differs from person to person — this is one reason why people born in the same year can experience life turning points at different times.
When Wealth stars (Pyeon-jae/Jeong-jae) enter your Major Cycle, financial opportunities increase. It's a favorable time for starting businesses or investing, with economic growth expected. When Authority stars (Pyeon-gwan/Jeong-gwan) appear, changes related to social status occur — promotions, career moves, or position changes, often accompanied by growing responsibilities.
During Seal star (Pyeon-in/Jeong-in) Major Cycles, opportunities related to academics, certifications, and inner growth emerge. It's an excellent time to begin studies or learn new fields. Expression star (Sik-sin/Sang-gwan) Major Cycles maximize creativity and expressiveness, allowing you to excel in art, creative work, and education. Companion star (Bi-gyeon/Geop-jae) Major Cycles bring competitive and independent energy — favorable for starting businesses or going independent, though financial management requires extra attention.
Knowing your Major Cycle is like having life navigation. Understanding which cycle you're currently in allows you to develop strategies suited to that period. During favorable cycles, actively seize opportunities; during challenging ones, focus on inner development and preparation. Remember that Major Cycles show the direction of flow, not absolute destiny — your personal effort and choices significantly influence outcomes.