"Which day is observed on…?" is one of the easiest marks in the General Awareness section of SSC, banking and railway exams — and a frequent trap in UPSC Prelims when two similar days are paired. Below are the most-asked national and international days, month by month, with why each date was chosen. Knowing the reason is what makes a date stick.
January
- January 9 — Pravasi Bharatiya Divas: Mahatma Gandhi returned to India from South Africa on this day in 1915.
- January 10 — World Hindi Day: marks the first World Hindi Conference, held in Nagpur in 1975.
- January 12 — National Youth Day: birth anniversary of Swami Vivekananda.
- January 15 — Army Day: Gen. K.M. Cariappa took over as the first Indian Commander-in-Chief in 1949.
- January 23 — Parakram Diwas: birth anniversary of Netaji Subhas Chandra Bose.
- January 24 — National Girl Child Day.
- January 25 — National Voters' Day: the Election Commission of India was founded on January 25, 1950.
- January 26 — Republic Day: the Constitution came into force in 1950.
- January 30 — Martyrs' Day (Shaheed Diwas): death anniversary of Mahatma Gandhi.
February
- February 4 — World Cancer Day.
- February 13 — World Radio Day (UNESCO).
- February 21 — International Mother Language Day: recalls the 1952 Bengali language movement in Dhaka.
- February 28 — National Science Day: C.V. Raman announced the Raman Effect in 1928.
March
- March 8 — International Women's Day.
- March 15 — World Consumer Rights Day.
- March 20 — International Day of Happiness.
- March 21 — International Day of Forests.
- March 22 — World Water Day.
- March 23 — World Meteorological Day: the WMO Convention came into force in 1950.
- March 24 — World Tuberculosis Day: Robert Koch announced the discovery of the TB bacterium in 1882.
April
- April 5 — National Maritime Day: the SS Loyalty, India's first merchant ship, sailed to London in 1919.
- April 7 — World Health Day: WHO was founded in 1948.
- April 14 — Ambedkar Jayanti.
- April 22 — Earth Day.
- April 24 — National Panchayati Raj Day: the 73rd Amendment came into force in 1993.
May
- May 1 — International Labour Day.
- May 3 — World Press Freedom Day.
- May 11 — National Technology Day: the Pokhran-II nuclear tests in 1998.
- May 22 — International Day for Biological Diversity.
- May 31 — World No Tobacco Day.
June
- June 5 — World Environment Day: first observed in 1973, after the 1972 Stockholm Conference.
- June 8 — World Oceans Day.
- June 21 — International Day of Yoga: proposed by India and adopted by the UN General Assembly in 2014; first observed in 2015.
- June 29 — Statistics Day: birth anniversary of P.C. Mahalanobis.
July
- July 1 — National Doctors' Day: birth and death anniversary of Dr. B.C. Roy.
- July 11 — World Population Day.
- July 26 — Kargil Vijay Diwas: victory in the 1999 Kargil conflict.
- July 29 — International Tiger Day.
August
- August 7 — National Handloom Day: recalls the Swadeshi Movement launched on August 7, 1905.
- August 12 — International Youth Day.
- August 15 — Independence Day.
- August 23 — National Space Day: Chandrayaan-3 landed near the lunar south pole in 2023.
- August 29 — National Sports Day: birth anniversary of hockey legend Major Dhyan Chand.
September
- September 5 — Teachers' Day: birth anniversary of Dr. S. Radhakrishnan.
- September 8 — International Literacy Day.
- September 14 — Hindi Diwas: the Constituent Assembly adopted Hindi in Devanagari as an official language in 1949.
- September 16 — World Ozone Day: the Montreal Protocol was signed in 1987.
- September 27 — World Tourism Day.
October
- October 2 — Gandhi Jayanti and the International Day of Non-Violence.
- October 8 — Indian Air Force Day: the IAF was established in 1932.
- October 16 — World Food Day: the FAO was founded in 1945.
- October 24 — United Nations Day: the UN Charter came into force in 1945.
- October 31 — Rashtriya Ekta Diwas: birth anniversary of Sardar Vallabhbhai Patel.
November
- November 14 — Children's Day: birth anniversary of Jawaharlal Nehru.
- November 26 — Constitution Day (Samvidhan Divas): the Constitution was adopted in 1949; observed under this name since 2015.
December
- December 1 — World AIDS Day.
- December 3 — International Day of Persons with Disabilities.
- December 4 — Navy Day: Operation Trident, the 1971 attack on Karachi harbour.
- December 7 — Armed Forces Flag Day.
- December 10 — Human Rights Day: the Universal Declaration of Human Rights was adopted in 1948.
- December 22 — National Mathematics Day: birth anniversary of Srinivasa Ramanujan.
- December 23 — Kisan Diwas: birth anniversary of former PM Chaudhary Charan Singh.
- December 25 — Good Governance Day: birth anniversary of Atal Bihari Vajpayee.
Pairs Exams Love to Mix Up
- National Science Day (Feb 28) vs National Technology Day (May 11) — Raman Effect vs Pokhran-II.
- National Youth Day (Jan 12, India) vs International Youth Day (Aug 12, UN).
- Hindi Diwas (Sep 14, India) vs World Hindi Day (Jan 10).
- Constitution Day (Nov 26) vs Republic Day (Jan 26) — adoption vs coming into force.
- Army Day (Jan 15), Air Force Day (Oct 8), Navy Day (Dec 4).
📝 Test Yourself (5 MCQs)
1. National Science Day is celebrated on February 28 to mark:
2. National Voters' Day is observed on January 25 because on that date:
3. Which day is observed as National Sports Day in India?
4. National Space Day (August 23) commemorates:
5. World Ozone Day on September 16 marks the signing of which agreement?
Answers: 1-C, 2-A, 3-D, 4-B, 5-C
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