Day animal

Meaning

The day animal is the animal of the day of birth: the branch of the day pillar, seen as one of the twelve animals. Days are counted in a cycle of sixty that has never been broken, so the animals follow one another day by day, Rat, Ox, Tiger, and come round again every twelve days; two people born a few days apart share a year and a month animal, and differ here.

The tradition reads it as the self: who a person is with those closest to them, and with a partner above all. That reading comes from BaZi, where the day pillar is the person. Its stem is the Day Master, the one the whole chart is read for, and its branch, sitting just beneath, is the partner palace, the place of the person closest to them. Chinese astrology took that branch as the day animal and kept both senses: the self as it lives at home, and the bond it makes there.

Of the four animals it is the most personal a birth date can give. The year animal is shared with a whole generation and the month animal with a season, while the day animal changes every day: it is the first of the four that says something about this person rather than about the time they were born into.

In practice

• Ulune’s reading of each animal as the self with those closest: the Rat attentive and resourceful, the one who thinks of everything; the Ox loyal, slow to trust and then trusting for good; the Tiger passionate and protective; the Rabbit tender, a maker of harmony; the Dragon generous and vivid; the Snake devoted and perceptive; the Horse warm and spontaneous; the Goat caring; the Monkey funny and inventive; the Rooster frank and dependable; the Dog loyal and protective; the Pig generous and affectionate.
• Two people: the Relationship lens compares the day animals second, after the year animals, as the closest look at a couple, then every other pair of places.
• The Calendar: every date has its day animal, and the almanac names the animal it clashes with, the one opposite on the wheel. Ulune shows how each of the reader’s animals meets the day’s, and marks the days whose animal is opposite the year animal as clash days, better kept for steady work than for big beginnings.
• Near midnight: by the tradition’s rule, a birth from 23:00 belongs to the next day. A birth within five minutes of the day’s turn, or a birth without a time, is marked as uncertain, since the day animal could be the one before or after.

Across traditions

• In Japan calendars still print each day’s sign, and on the Day of the Ox in the hot weeks of summer, doyō no ushi no hi, many people eat grilled eel, a custom said to go back to the Edo period.
• On Java a person’s weton, the day of birth in a cycle of thirty-five days that weaves the seven-day week with a five-day market week, is read for character and for matching couples, much as the day animal is read for partners.
• The Maya count of 260 days, still kept by K’iche’ daykeepers in Guatemala, gives every day of birth a sign read as a person’s nature: the closest parallel, on the other side of the world.

Origin and history

Counting days by the sixty pairs of stems and branches is among the oldest habits of Chinese timekeeping. Shang diviners dated their oracle bones by it in the 13th century BC, and the count has run without a break since at least the 8th century BC, the dates of the Spring and Autumn Annals among its earliest witnesses. The days had their branch, and so in time their animal, long before anyone read them for a person.

Reading the day for a person came with the art of reading births. Han Yu’s epitaph for Li Xuzhong, who died in 813, says that he read the stems and branches of the year, month and day of birth. In the Song dynasty the school that took Xu Ziping’s name made the day the person, the Day Master, and read the branch beneath it as the partner’s place, as the Yuanhai Ziping and later the San Ming Tong Hui teach. The day animal as a portrait of the self in private, read beside the year animal, is the work of popular books of the 20th century.

How Ulune calculates it

Ulune counts days as astronomers do, by the Julian day number, and takes that number plus 49, modulo 60: the count that makes 1 January 2000 a Wu-Wu day and 1 October 1949 a Jia-Zi day, as published tables have them. The day is read on the birthplace’s own clock, true solar time by default, or local mean time or the clock on the wall in Settings → Chinese traditions, and it turns at 23:00, at the start of the Rat hour, as the Zi Ping school counts; midnight, or midnight with the Rat hour split, can be chosen instead. The Calendar reads each date from midnight, as almanacs print it: 23 October 2026, for instance, is a Geng-Wu day, a Horse day, which clashes with the Rat.

Correspondences