2009 — Year of the Ox 牛 己丑

2009 is the year of the Ox 牛 — year pillar 己丑, Yin Earth. Every date on this page is computed by the same astronomical kernel that powers our public API, to the minute.

Lichun 2009-02-04 00:49:48 · CNY 2009-01-26 · engine 0.1.0

The two-calendar window in 2009

In 2009, Chinese New Year 正月初一 falls first (2009-01-26) and Lichun 立春 9 days later (2009-02-04). Anyone born inside that 9-day window gets a different zodiac animal and year pillar depending on which convention their tool follows — BaZi practice switches at the exact Lichun instant (2009-02-04 00:49:48, Beijing), folk calendar practice at the new moon. This is not an edge case we gloss over — it is the single most common source of wrong zodiac years, and our engine comparison tool shows it live with three engines side by side.

Your Kua number for 2009

Born inside 2009 (after Lichun)? Your Ming Gua: male (2000 − 2009) mod 9 = 9 → Li 离 · female (2009 − 2000 + 6) mod 9 = 6 → Qian 乾. Born before Lichun? The formula runs on 2008 — the Kua calculator applies the boundary for your exact birthday.

FAQ

When does the year of the Ox (己丑) start and end?

By the exact Lichun instant: from 2009-02-04 00:49:48 Beijing to the Lichun of 2010. By the lunar calendar: from Chinese New Year (2009-01-26) to the next new-year new moon. The two definitions disagree about 9 days of 2009 — see the window note above.

Is 2009 a leap month year?

Yes — the lunar year 2009 has 13 months with a leap month 5 閏5月, computed by the GB/T 33661-2017 rules (no-zhongqi method, with the 2033-type edge cases handled).

What is my Kua number if I was born in 2009?

For births after Lichun: male 9 (离), female 6 (乾). Births before the exact Lichun instant belong to 2008 and use that year in the formula — most online calculators get early-February birthdays wrong here.

Tools for this year

All 24 solar terms of 2009 · Almanac for Chinese New Year (2009-01-26) · Kua number calculator · Four-pillar chart · All Ox years