Twelve animals, five elements

The Chinese zodiac

Twelve animals in a fixed order, each year one further along. The animal a quick lookup prints for a birth year is right for most of that year and wrong for the weeks before the lunar new year, which is when the animal actually changes.

21 Jan29 Jan6 Feb14 Feb22 Feb201520231997202621 Jan29 Jan6 Feb14 Feb22 Feb2015202319972026
When the lunar new year fell, 1997–2026. Anyone born in the weeks above a year's mark belongs to the previous animal. From 1920 to 2026, 9.6% of all dates came before that year's new year — about one date in ten — and working the animal out from the year number alone gets every one of them wrong.

The twelve animals

The second name for each is its earthly branch, in pinyin.

The year turns at the lunar new year, not 1 January

The new year falls on the second new moon after the December solstice, which lands somewhere between 21 January and 20 February. Anyone born from 1 January up to that date was born in the animal year before the one usually printed for the calendar year of their birth. The table gives the date for each of the 30 years the chart above draws.

YearLunar new yearAnimalElement
19977 FebruaryOxFire
199828 JanuaryTigerEarth
199916 FebruaryRabbitEarth
20005 FebruaryDragonMetal
200124 JanuarySnakeMetal
200212 FebruaryHorseWater
20031 FebruaryGoatWater
200422 JanuaryMonkeyWood
20059 FebruaryRoosterWood
200629 JanuaryDogFire
200718 FebruaryPigFire
20087 FebruaryRatEarth
200926 JanuaryOxEarth
201014 FebruaryTigerMetal
20113 FebruaryRabbitMetal
201223 JanuaryDragonWater
201310 FebruarySnakeWater
201431 JanuaryHorseWood
201519 FebruaryGoatWood
20168 FebruaryMonkeyFire
201728 JanuaryRoosterFire
201816 FebruaryDogEarth
20195 FebruaryPigEarth
202025 JanuaryRatMetal
202112 FebruaryOxMetal
20221 FebruaryTigerWater
202322 JanuaryRabbitWater
202410 FebruaryDragonWood
202529 JanuarySnakeWood
202617 FebruaryHorseFire

Computed from the lunar calendar, not from the year number alone.

Why there is a 60-year cycle

The animal repeats every twelve years. It is paired with one of five elements — Wood, Fire, Earth, Metal, Water — and each element lasts two years, so the elements take ten years to come round. A cycle of twelve and a cycle of ten line up again only after sixty years, their least common multiple, so the same animal-and-element pairing, such as a Fire Rat or a Metal Ox, recurs every sixty years. The current animal, Horse, takes the five elements in turn, the next one each time it comes round, so the Metal Horse of 1930 came round again in 1990:

1930Metal
1942Water
1954Wood
1966Fire
1978Earth
1990Metal
2002Water
2014Wood
2026Fire

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