Comment by kijin

According to a traditional East Asian world view, your life is influenced by the powers that govern each unit of time -- hour, day, month, year -- that you pass through.

Under this system, the number of distinct powers that you were influenced by is more important than the exact number of days or years that you spent on this planet. Korean culture is still saturated with this stuff. You can DM a shaman your date of birth, and they'll use this kind of system to tell your fortunes.