2005 Chinese Zodiac: Year of the Wood Rooster

By Astrolivo editorial team

In the Chinese lunisolar calendar, the Year of the Wood Rooster (Yi-you) ran inclusively from February 9, 2005, through January 28, 2006.

Because the 2005 Lunar New Year occurred on February 9, anyone born between January 1 and February 8, 2005, belongs to the preceding Monkey year rather than the Rooster year.

2005 Birth Date Lookup

Check your exact birth date in the Chinese zodiac reference table below:

Birth Date Range (Inclusive)	Chinese Zodiac Sign	Stem-Branch Year
January 1, 2005 – February 8, 2005	Monkey	Ending of the previous lunar year (Jia-shen)
February 9, 2005 – January 28, 2006	Wood Rooster	Yi-you (Year of the Rooster)

Why the Gregorian Year Alone Is Not Enough

The Chinese calendar is lunisolar, meaning months follow lunar phases while leap months keep the calendar synchronized with the solar year. Because Lunar New Year does not fall on January 1, a birth year of "2005" spans two different zodiac animals.

As a hypothetical illustration: a person born on February 2, 2005, falls before the Lunar New Year transition and has the Monkey sign, whereas someone born a week later on February 9, 2005, enters the Wood Rooster year.

The 2005 Stem, Element, and 60-Year Cycle

The traditional Chinese calendar names years using a 60-year cycle of ten heavenly stems and twelve earthly branches (associated with the twelve zodiac animals), anchored in modern tables by Jia-zi (1984). Every 12th year is a Rooster year, but the accompanying element shifts across five phases, so the Wood Rooster (Yi-you) combination repeats only once every 60 years.

The Hong Kong Observatory conversion table for 2005 records the year as Yi-you (Year of the Rooster). In the traditional five-phase (Wu Xing) mapping, both Jia and Yi stems correspond to Wood, making the lunar year starting February 9, 2005, the Year of the Wood Rooster.

How This Differs from Western Sun Signs and Four Pillars

Western Sun signs track the Sun's tropical longitude across twelve roughly month-long periods, whereas the Chinese zodiac assigns one animal and stem element to a full lunisolar year.
Four Pillars (BaZi) practice typically changes the year pillar at the solar term Li Chun (early February) and interprets pillars for the year, month, day, and birth hour. This page uses the civil Lunar New Year boundary for year lookup, not a Four Pillars calculation.

Sources and Reference Basis

Exact start and end dates and the Yi-you (Year of the Rooster) header are taken from the official Hong Kong Observatory Gregorian-lunar calendar conversion tables for 2005 and 2006. The 60-year stem-branch sequence follows the Hong Kong Observatory reference tables, the five-phase mapping (Yi = Wood) is verified in Yoo & Yoon (2019, DOI: 10.14369/jkmc.2019.32.2.017), and historical calendar context is drawn from the Victoria and Albert Museum and Royal Museums Greenwich. These designations represent a cultural calendar tradition rather than scientifically measured personality traits.