Tenichijin and Taiitsu

Their names resemble one another, but Tenichijin and Taiitsu are distinct divine figures in the calendrical tradition.

The centre of heaven and the deity before it

Taiitsu is revered as the divine source at the centre of heaven. Tenichijin is described as the noble deity attending before that celestial abode and nurturing the myriad beings. In Six Ren divination Tenichi Kijin leads the Twelve Heavenly Generals, and Abe no Seimei’s Senji Ryakketsu begins by explaining how this deity is located.

A sixty-day movement

Tradition says that Tenichijin descends on the day tsuchinoto-tori, travels through the eight directions for forty-four days, and returns to heaven on mizunoto-mi. The following sixteen days are called Tenichi Tenjō. Forty-four and sixteen make sixty, matching one full cycle of the sexagenary stems and branches.

Courtesy, restraint and balance

While the deity occupied a direction, court society observed katatagae, yielding the road rather than travelling straight toward it. During Tenichi Tenjō, Nichiyūjin was believed to visit houses, giving rise to customs of quietness and care around the hearth. Traditions also contrast Taiitsu beginning from the northern Water Palace with Tenichijin beginning from the southern Fire Palace.

These customs teach courtesy toward the sacred movement of heaven and earth. They are not rules for panic, but forms of attentive living.