Twelve hundred years ago, the court astrologer Abe no Seimei 安倍晴明 read the night sky to foretell the days ahead.

The system he used — Sukuyo 宿曜 — divides the moon's path into 27 mansions 二十七宿. Each holds a different temperament. A different season of the soul.

Your birth date holds the mansion the moon was in when you arrived.