Date 21st Mar 2026 Time ... World Day for Glaciers The World Day for Glaciers is observed annually on March 21st. It was established by a resolution of the UN General Assembly in December 2022 and celebrated for the first time in 2025. Labels -YEARLY- Tags: how long till the glaciers are gone, how many glaciers were there 100 years ago, world day for glaciers, world day for glaciers 2025