♦ World Soil Day is observed every year on December 5  to focus attention on the importance of healthy soil and to advocate for the sustainable management of soil resources. The idea of dedicating an international day to soil was first proposed by the International Union of Soil Sciences in 2002.

♦ With the support of the Food and Agriculture Organisation (FAO), and guided by the Kingdom of Thailand through the Global Soil Partnership, efforts were made to formally establish World Soil Day as a global awareness initiative. In December 2013, the UN General Assembly declared that the first official World Soil Day would be celebrated on 5 December 2014.

♦ 2025 theme: Healthy Soils for Healthy Cities