World Day for Glaciers2026 · Date · History · Messages · Quotes
A/RES/77/158
About World Day for Glaciers
World Day for Glaciers is observed on 21 March. The United Nations General Assembly proclaimed the observance through resolution A/RES/77/158, with annual observance beginning in 2025.
The day raises awareness of glaciers, snow and ice, their role in freshwater and climate systems, and the consequences of glacier loss. It should not be confused with World Water Day on 22 March, although the subjects are closely connected.
Why World Day for Glaciers matters
Glaciers store and release freshwater, influence river systems and sea level, and provide evidence of changing climate conditions. Their importance differs by region and watershed, so local impacts should be described with appropriate geographic evidence.
Public-facing material should distinguish observed glacier change from projections and should cite scientific institutions for quantitative climate claims.
History of World Day for Glaciers
In December 2022, the UN General Assembly adopted resolution A/RES/77/158, declaring 2025 the International Year of Glaciers’ Preservation and proclaiming 21 March of each year as World Day for Glaciers beginning in 2025.
UNESCO and the World Meteorological Organization have major implementation roles in glacier-preservation and cryosphere-awareness efforts, including work connected to the International Year and subsequent cryosphere initiatives.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
United Nations General Assembly
UN General Assembly resolution A/RES/77/158
First documented observance
A/RES/77/158 proclaimed 21 March as World Day for Glaciers beginning in 2025.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
5 fields not established in reviewed sources
How to Observe World Day for Glaciers
Use glacier monitoring data or repeat photography from a scientific institution to study change over time.
Map which communities or river systems depend on seasonal snow and glacier melt, using region-specific sources.
Discuss how glacier change can affect water supply, hazards, ecosystems and sea level without treating all regions as identical.
Visit a museum, science centre or geological resource that explains the cryosphere and glacier formation.
Avoid unsafe glacier travel or field activities without qualified local guidance and appropriate equipment.
World Day for Glaciers Facts
In the entry for World Day for Glaciers, World Day for Glaciers is observed on 21 March.
The UN General Assembly proclaimed the day through resolution A/RES/77/158.
Annual observance began in 2025.
The same resolution declared 2025 the International Year of Glaciers’ Preservation.
The reviewed source does not establish why 21 March itself was selected.
World Day for Glaciers Messages
May World Day for Glaciers inspire curiosity about the living world and thoughtful action to protect it.
Celebrate World Day for Glaciers by learning from credible conservation sources and choosing one practical way to reduce harm or support protection.
Wishing everyone marking World Day for Glaciers a day of discovery, respect for nature and care that continues beyond today.
On World Day for Glaciers, may appreciation for the natural world lead to informed stewardship and practical care for the places and species around us.
World Day for Glaciers Quotes
“With rising temperatures, glaciers are melting at an unprecedented speed.”
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
UNESCO — World Day for Glaciers (opens in a new tab)
United Nations Digital Library — A/RES/77/158 action note 14 December 2022 (opens in a new tab)
United Nations — World Day for Glaciers (opens in a new tab)
Dedicated Authoritative Page
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is World Day for Glaciers?
21 March The documented recurrence rule is: 21 March.
Does World Day for Glaciers fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is World Day for Glaciers an official public holiday?
The reviewed sources verify it within this scope: United Nations / international observance. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes World Day for Glaciers?
The reviewed sources identify United Nations General Assembly as the proclaiming or establishing body.
Is World Day for Glaciers international or country-specific?
The documented scope is international or global: United Nations / international observance. That does not mean every country treats the date as a public holiday or observes it in the same way.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-09-07.
When did World Day for Glaciers begin?
The UN General Assembly proclaimed the observance through resolution A/RES/77/158, with annual observance beginning in 2025.
Is World Day for Glaciers the same as World Water Day?
No. World Day for Glaciers on 21 March focuses specifically on glaciers and the cryosphere, while World Water Day on 22 March addresses freshwater and water-related challenges more broadly.
Why does this guide not explain why 21 March was chosen?
The reviewed UN and UNESCO material establishes the date and institutional history but does not provide a sufficiently clear reason for selecting 21 March, so this guide does not infer one.
How this differs from closely related observances
These distinctions use the cited evidence to clarify scope without treating related observances as identical.
Is World Day for Glaciers the same as World Water Day?
World Day for Glaciers on 21 March focuses specifically on glaciers, snow, ice and the cryosphere. World Water Day on 22 March covers freshwater and water-related challenges more broadly.
Open World Water Day →Distinction sources
Other observances on March 21
These observances are also listed on March 21, 2027.
California Strawberry Day
California Strawberry Commission first-party dietitian toolkits list March 21 as National California Strawberry Day and recommend it as an education/story opportunity about growers and farm…
Harmony Day
Department of the Prime Minister and Cabinet, Australian Government
Human Rights Day
The South African Government’s public-holidays page lists Human Rights Day on 21 March.
Independence Day
Namibia government history states that independence occurred on 21 March 1990 and that Independence Day is annually celebrated on March 21; the Public Holidays Act independently lists the s…
International Colour Day
International Colour Association (AIC)
International Day for the Elimination of Racial Discrimination
A/RES/2142 (XXI)