World Day for Glaciers is observed worldwide every March 21, following its establishment by a United Nations General Assembly resolution in December 2022. The day was first celebrated in 2025 and aims to educate the public about the critical role of glaciers, snow, and ice in the climate and water cycle. It highlights the alarming rate of glacier melt due to climate change, which threatens freshwater availability for over 2 billion people. The initiative is jointly facilitated by the World Meteorological Organization and UNESCO, focusing on advocating for sustainable measures to preserve glaciers. The observance underscores the importance of mountain regions as vital sources of global freshwater and ecosystem services.