The lunisolar calendar used in China during the year 2018, officially known as the DingYou year (), began on February 16th and ended on February 4th, 2019. It was the year of the Earth Dog, following the year of the Fire Rooster and preceding the year of the Earth Pig. This calendar system determines dates and periods for traditional festivals, agricultural practices, and auspicious occasions.
Observance of this traditional calendar remains culturally significant for many people of Chinese descent worldwide. It provides a framework for understanding annual cycles and connecting with cultural heritage through celebrations like Chinese New Year (Spring Festival) and the Mid-Autumn Festival. Rooted in ancient astronomical observation, the lunisolar calendar reflects a deep connection between human life and the natural world. This traditional timekeeping method continues to influence various aspects of life, from family gatherings and business practices to personal beliefs and societal rhythms.