day of the Dog
In the traditional Japanese calendar, the day associated with the zodiac sign of the Dog. It is considered auspicious for safe childbirth, and many pregnant women visit shrines on this day to pray for an easy delivery.
I go to pray for a safe delivery on the day of the Dog.
From the zodiac sign 戌 (いぬ, dog) and 日 (ひ, day). The association with safe childbirth comes from the belief that dogs give birth easily.