IMPORTANT DAYS

International Labour Day — 1 May

• Marks the historic struggle of workers worldwide for fair wages, safe conditions and an eight-hour work day.
• In India, first observed in Chennai (then Madras) in 1923 by the Labour Kisan Party of Hindustan.
• Trade unions and state governments across India organise rallies and worker-welfare events on this day.
• Gujarat also celebrates its Foundation Day on 1 May, marking statehood carved out of Bombay State in 1960.
• Maharashtra Day is also observed on the same date, marking that state's formation in 1960.

World Tuna Day — 2 May

• Recognised annually by the United Nations since 2017 to highlight the importance of tuna stocks to food security and livelihoods.
• Draws attention to overfishing threats and the need for sustainable tuna fisheries management worldwide.
• Tuna supports millions of livelihoods globally through fishing, processing and trade.

World Laughter Day — First Sunday of May

• Founded by Dr Madan Kataria, pioneer of the global Laughter Yoga movement.
• Promotes laughter as a tool for physical and mental wellbeing and world peace.
• The first Laughter Day was celebrated in Mumbai in 1998.

World Press Freedom Day — 3 May

• Proclaimed by the UN General Assembly on UNESCO's recommendation to champion free, independent journalism.
• Used globally to evaluate press freedom, defend media from attacks, and honour journalists who lost their lives in the line of duty.
• UNESCO also awards the World Press Freedom Prize on this occasion each year.

World Asthma Day — First Tuesday of May

• Organised by the Global Initiative for Asthma (GINA) to raise awareness of asthma care and management.
• Focuses on reducing the global burden of this chronic respiratory disease through better treatment access.
• Asthma affects an estimated 260 million people worldwide, per WHO estimates.

World Athletics Day — 7 May

• Launched in 1996 by then IAAF President Primo Nebiolo to popularise athletics among youth.
• The IAAF (founded 1912) was renamed World Athletics (as International Association of Athletics Federations) in 2001.
• Aims to encourage participation in athletics as a foundation sport for overall fitness.

World Thalassaemia Day — 8 May

• Established in 1994 by the Thalassaemia International Federation to build awareness of this inherited blood disorder.
• Encourages screening, safe blood transfusion practices and genetic counselling.
• Thalassaemia is particularly prevalent in parts of India, the Mediterranean, and Southeast Asia.

World Red Cross and Red Crescent Day — 8 May

• Commemorates the birth anniversary of Henry Dunant, founder of the International Committee of the Red Cross (ICRC).
• Celebrates humanitarian volunteers who provide relief during conflicts and disasters worldwide.
• The Red Cross movement operates in nearly every country through National Societies.

Victory Day (Russia) — 9 May

• Commemorates the surrender of Nazi Germany in 1945, ending the Second World War in Europe.
• Marked in Russia with large military parades in Moscow's Red Square.
• Also observed in several other former Soviet states as a major national holiday.

National Technology Day — 11 May

• Commemorates the 1998 Pokhran nuclear tests conducted under then PM Atal Bihari Vajpayee.
• Vajpayee first declared this day to honour Indian scientists' contribution to self-reliant technological progress.
• Observed with award ceremonies recognising innovation in science and technology institutions.
• The tests, codenamed Operation Shakti, made India the sixth nation to test nuclear weapons openly.

International Nurses Day — 12 May

• Marks the birth anniversary of Florence Nightingale, pioneer of modern nursing.
• Officially designated in 1974 to honour the contribution of nurses to healthcare worldwide.
• In India, the President confers the National Florence Nightingale Awards on this day.

International Day of Families — 15 May

• Proclaimed by the UN General Assembly in 1993; first observed the following year.
• Highlights the role of families in development and draws attention to family-related social, economic and demographic issues.
• Each year's observance often carries a specific thematic focus set by the UN.

World Hypertension Day — 17 May

• Promoted by the World Hypertension League, an umbrella body of around 85 national hypertension societies.
• Aims to raise public awareness of high blood pressure as a leading cause of cardiovascular disease.
• Hypertension is often called a 'silent killer' since it frequently shows no obvious symptoms.

World Telecommunication and Information Society Day — 17 May

• Commemorates the founding of the International Telecommunication Union on 17 May 1865.
• Highlights the role of ICT in bridging the digital divide and building an inclusive information society.
• ITU is the oldest UN specialised agency, predating the UN itself by 80 years.

International Museum Day — 18 May

• Coordinated annually by the International Council of Museums (ICOM) since 1977.
• Encourages public engagement with museums as spaces for culture, education and dialogue.
• Many Indian museums offer free or discounted entry on this day to boost public visitation.

World AIDS Vaccine Day — 18 May

• First observed in 1998 to recognise volunteers, researchers and communities working towards an HIV vaccine.
• Also known as HIV Vaccine Awareness Day.
• Despite decades of research, an effective preventive HIV vaccine remains elusive, underscoring the day's significance.

World Metrology Day — 20 May

• Commemorates the signing of the Metre Convention in Paris in 1875, which standardised global measurement.
• Promotes the role of accurate measurement in trade, health, safety and scientific research.
• India's National Physical Laboratory serves as the country's apex metrology institute.

Anti-Terrorism Day (India) — 21 May

• Observed on the death anniversary of former PM Rajiv Gandhi, assassinated on this date in 1991.
• Government offices and institutions take a pledge against terrorism and violence.
• Instituted by the Government of India to promote peace, unity and communal harmony.

World Day for Cultural Diversity for Dialogue and Development — 21 May

• Adopted by UNESCO in 2001 to promote the value of cultural diversity for inclusive societies.
• Encourages intercultural dialogue as a tool for peace and sustainable development.
• Ties into UNESCO's broader mandate of protecting the world's tangible and intangible cultural heritage.

International Day for Biological Diversity — 22 May

• The 2026 theme is 'Acting Locally for Global Impact', emphasising community-driven conservation.
• Marks the adoption date of the Convention on Biological Diversity text in 1992.
• India is recognised as one of the world's 17 megadiverse countries.

Commonwealth Day (India observance) — 24 May

• Marks the birth anniversary of Queen Victoria and was earlier known as Empire Day, first observed in the UK in 1904.
• Commemorates the shared history and cooperation among Commonwealth nations.
• India remains a member of the Commonwealth of Nations despite becoming a republic in 1950.

International Day of UN Peacekeepers — 29 May

• Honours the service and sacrifice of UN peacekeeping personnel; the first UN peacekeeping mission was established in 1948.
• India is among the largest troop-contributing countries to UN peacekeeping missions historically.
• Thousands of Indian peacekeepers have served across UN missions in Africa, Asia and the Middle East.

International Everest Day — 29 May

• Commemorates the first successful summit of Mount Everest in 1953 by Tenzing Norgay and Edmund Hillary.
• Celebrated especially in Nepal to honour mountaineering achievement and Sherpa contributions.
• Mount Everest, at 8,848.86 metres, straddles the border between Nepal and Tibet (China).

World No Tobacco Day — 31 May

• First observed by WHO member states in 1987 to highlight the health risks of tobacco use.
• Encourages governments to adopt effective tobacco-control policies to reduce consumption.
• Tobacco use remains one of the leading preventable causes of death worldwide.