The tables
Why the pair is rated this way
The Rat and the Horse sit directly opposite each other on the circle of twelve, which makes them a clash pair (沖). 子 faces 午 across the wheel, winter against summer, and the classical reading is strong movement between them rather than stillness.
The Rat is a water sign and the Horse a fire sign. In the controlling cycle water puts out fire, so the Rat is read as the one who sets limits and the Horse as the one who pushes against them.
The Rat rules the winter month that starts around Dec 7 and the hours from 11 pm to 1 am; the Horse rules the summer month that starts around Jun 6 and the hours from 11 am to 1 pm.
For comparison, the Rat's harmony partner is the Ox and its trine partners are the Monkey and the Dragon; the Horse's harmony partner is the Goat and its trine partners are the Tiger and the Dog.
Reading
In love, friendship and work
Traditionally the Rat is quick-witted, resourceful and careful with money, and the Horse is energetic, sociable and independent. The Rat tends to bring sharp planning and look for security; the Horse tends to bring enthusiasm and look for freedom.
In love, a clash pair is the classic opposites-attract match: a strong pull and strong friction, read as movement and change rather than as a bad sign.
As friends or co-workers they tend to keep each other in check, which can sharpen the work as long as neither tries to run the other.
Years
Which years are these animals?
Rat years: 1948 (Earth Rat), 1960 (Metal Rat), 1972 (Water Rat), 1984 (Wood Rat), 1996 (Fire Rat), 2008 (Earth Rat), 2020 (Metal Rat).
Horse years: 1954 (Wood Horse), 1966 (Fire Horse), 1978 (Earth Horse), 1990 (Metal Horse), 2002 (Water Horse), 2014 (Wood Horse), 2026 (Fire Horse).
9 of the idols with a Bias Match idol page were born in Rat years.
18 of the idols with a Bias Match idol page were born in Horse years.
Your pair
Check two birth years
A zodiac year starts in late January or February, not on January 1: Chinese New Year calendars switch at Lunar New Year, and saju switches at Lichun, around February 4. If you were born in January or early February, you may belong to the year before.
Beyond the birth year
On Bias Match the animal that counts most is not the birth year but the day branch, the animal in each person's day pillar. If two people's day branches are Rat (子) and Horse (午), the compatibility calculator scores that check as a minus, next to five other checks.
The text is fixed sentence templates filled in with the classical relation tables built into the Bias Match engine; no AI model generates or rewrites it. For entertainment only: the zodiac describes old patterns, not what will happen between two people.