General Knowledge
Intermediate Level
Days and Years
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Jul 11, 2026
About This Cheat Sheet
Hey there! Welcome to your complete guide to Important Days and Years for competitive exams. I've put together everything you need to know in one place — from National Days of India and International Days to Important Years in Indian History, the Constitution, Space Program, World History, and more. Whether you're preparing for SSC, Banking, Railways, UPSC, or State PSC exams, this cheat sheet covers dates, events, and shortcut techniques to help you score better.
🇮🇳 National Days of India
- Republic Day - Jan 26 (1950)
- Independence Day - Aug 15 (1947)
- Gandhi Jayanti - Oct 2
- Martyr's Day - Jan 30
- Constitution Day - Nov 26 (1949)
- Army Day - Jan 15
- Navy Day - Dec 4 (1971)
- Air Force Day - Oct 8
🌍 International Days
- Women's Day - Mar 8
- Labour Day - May 1
- World Health Day - Apr 7
- Environment Day - Jun 5
- World AIDS Day - Dec 1
- World Water Day - Mar 22
- International Yoga Day - Jun 21
- Human Rights Day - Dec 10
📚 Important Years
- 1857 - Revolt of 1857
- 1885 - INC Formation
- 1919 - Jallianwala Bagh
- 1930 - Dandi March
- 1942 - Quit India
- 1947 - Independence
- 1950 - Republic Day
- 1971 - India-Pakistan War
🚀 Space Program
- 1969 - ISRO founded
- 1975 - Aryabhata
- 1980 - SLV-3
- 2008 - Chandrayaan-1
- 2014 - Mangalyaan
- 2019 - Chandrayaan-2
- 2023 - Chandrayaan-3
- 2023 - Aditya-L1
📜 Constitution
- 1947 - Independence
- 1949 - Constitution adopted
- 1950 - Republic Day
- 1951 - First Amendment
- 1976 - 42nd Amendment
- 1978 - 44th Amendment
- 1992 - 73rd & 74th Amendments
- 2019 - Article 370 abrogated
🌍 World History
- 1776 - American Declaration
- 1789 - French Revolution
- 1914-1918 - World War I
- 1939-1945 - World War II
- 1945 - UN formed
- 1969 - Moon Landing
- 1991 - Soviet Union dissolved
- 2001 - 9/11 Attacks
🇮🇳 Jan 26
Republic Day
1950🇮🇳 Aug 15
Independence Day
1947🌍 Jun 21
International Yoga Day
2015 first🚀 1969
ISRO Founded
Space Program🇮🇳 Important National Days of India
🇮🇳 Republic Day
- Date: January 26
- Significance: India became a Republic (1950)
- Key: Constitution came into force
- Parade: Rajpath, Delhi
🇮🇳 Independence Day
- Date: August 15
- Significance: India got Independence (1947)
- Key: Jawaharlal Nehru's speech
- Flag Hoisting: Red Fort
🕊️ Gandhi Jayanti
- Date: October 2
- Significance: Birth of Mahatma Gandhi
- Key: International Day of Non-Violence
- Observance: Prayer meetings
🕯️ Martyr's Day
- Date: January 30
- Significance: Death of Mahatma Gandhi
- Key: 1948 assassination
- Observance: 2-minute silence
🇮🇳 More National Days of India
📜 Constitution Day
- Date: November 26
- Significance: Constitution adopted (1949)
- Key: Also Law Day
- Observance: Preamble reading
🪖 Army Day
- Date: January 15
- Significance: FM Cariappa took charge (1949)
- Key: First Indian Commander-in-Chief
- Parades: Army bases
⚓ Navy Day
- Date: December 4
- Significance: Operation Trident (1971)
- Key: India-Pakistan War
- Observance: Navy celebrations
✈️ Air Force Day
- Date: October 8
- Significance: IAF established (1932)
- Key: Air Force foundation
- Air Shows: Display
🇮🇳 National Days of India (Cultural & Social)
🧘 National Youth Day
- Date: January 12
- Significance: Swami Vivekananda's Birthday
- Key: 1863 birth
- Observance: Youth events
👨🏫 Teachers Day
- Date: September 5
- Significance: Dr. S. Radhakrishnan's Birthday
- Key: 1888 birth, President
- Observance: Teacher appreciation
👶 Children's Day
- Date: November 14
- Significance: Jawaharlal Nehru's Birthday
- Key: 1889 birth, Chacha Nehru
- Observance: Children's events
🔬 Science Day
- Date: February 28
- Significance: Raman Effect Discovery (1928)
- Key: C.V. Raman's discovery
- Observance: Science events
🌍 Important International Days
World Health Day: April 7 — WHO Foundation
World Environment Day: June 5 — Environmental Awareness
International Women's Day: March 8 — Women's Rights
International Labour Day: May 1 — Workers' Rights
World AIDS Day: December 1 — HIV/AIDS Awareness
World Water Day: March 22 — Water Conservation
World Earth Day: April 22 — Environmental Protection
International Yoga Day: June 21 — Yoga Awareness
World Population Day: July 11 — Population Awareness
International Day of Peace: September 21 — World Peace
Human Rights Day: December 10 — Human Rights
World Tourism Day: September 27 — Tourism
World Teachers Day: October 5 — Teachers
World Food Day: October 16 — Food Security
🌍 More International Days
International Day of Happiness: March 20
World Red Cross Day: May 8
International Day of the Girl Child: October 11
World Wildlife Day: March 3
World Sparrow Day: March 20
World Book and Copyright Day: April 23
World Photography Day: August 19
World Suicide Prevention Day: September 10
International Day for Disaster Reduction: October 13
World Diabetes Day: November 14
World Red Cross Day: May 8
International Youth Day: August 12
📚 Important Years in Indian History
🏛️ Early Events
- 1757: Battle of Plassey
- 1764: Battle of Buxar
- 1857: Revolt of 1857
- 1885: INC Formation
- 1905: Partition of Bengal
- 1919: Jallianwala Bagh Massacre
🕊️ Freedom Struggle
- 1920: Non-Cooperation Movement
- 1930: Civil Disobedience (Dandi March)
- 1942: Quit India Movement
- 1947: Indian Independence
- 1948: Gandhi's Assassination
- 1950: Republic Day
⚔️ Wars & Events
- 1962: India-China War
- 1965: India-Pakistan War
- 1971: India-Pakistan War (Bangladesh Liberation)
- 1974: Pokhran Nuclear Test (Smiling Buddha)
- 1998: Pokhran Nuclear Test (Operation Shakti)
- 1999: Kargil War
📜 Recent Events
- 2014: Modi becomes PM
- 2017: GST Implementation
- 2019: Article 370 abrogated
- 2020: COVID-19 Pandemic
- 2023: Chandrayaan-3 success
- 2024: General Elections
📜 Important Years in Indian Constitution
📜 Key Milestones
- 1947: India became Independent
- 1949: Constitution adopted (November 26)
- 1950: Republic Day (January 26)
- 1951: First Amendment
📜 Amendments
- 1971: 24th Amendment
- 1976: 42nd Amendment (Emergency)
- 1978: 44th Amendment
- 1992: 73rd & 74th Amendments
📜 Key Changes
- 1975: Emergency declared
- 1977: Emergency revoked
- 1991: Economic Reforms
- 2019: Article 370 abrogated
📜 Key Features
- Fundamental Rights: Articles 12-35
- Directive Principles: Articles 36-51
- Fundamental Duties: Article 51A
- Preamble: Added in 1976
🚀 Important Years in Indian Space Program
🚀 Founding Years
- 1969: ISRO founded
- 1972: Space Commission
- 1975: Aryabhata (First Indian satellite)
- 1980: SLV-3 (First launch vehicle)
🌕 Lunar Missions
- 2008: Chandrayaan-1 (Found water on Moon)
- 2019: Chandrayaan-2 (Orbiter successful)
- 2023: Chandrayaan-3 (Successful Moon landing)
- 2023: Aditya-L1 (Solar mission)
🔴 Mars Mission
- 2013: Mars Orbiter Mission launched
- 2014: Mangalyaan entered Mars orbit
- Key: First Asian country to reach Mars
- Key: First country on first attempt
🚀 Recent Launches
- 2024: X-ray Polarimeter Satellite
- 2025: Gaganyaan (Human spaceflight)
- Future: Venus Mission
- Future: Space station
🌍 Important Years in World History
🌍 Major Events
- 1776: American Declaration of Independence
- 1789: French Revolution
- 1914-1918: World War I
- 1939-1945: World War II
- 1945: United Nations formed
- 1969: Moon Landing (Apollo 11)
- 1991: Soviet Union dissolved
- 2001: 9/11 Attacks
🌍 Scientific Discoveries
- 1543: Copernicus: Heliocentric theory
- 1687: Newton: Laws of Motion
- 1869: Mendeleev: Periodic Table
- 1896: Becquerel: Radioactivity
- 1905: Einstein: Theory of Relativity
- 1928: Fleming: Penicillin
- 1953: Watson & Crick: DNA Structure
- 2012: Higgs Boson discovered
🌍 Political Events
- 1947: India's Independence
- 1948: Israel formed
- 1989: Berlin Wall falls
- 1990: Germany unified
- 1994: Mandela elected South Africa
- 2008: Obama elected US President
- 2011: Arab Spring
- 2016: Brexit
🎯 Important Days & Years Quick Revision
The Golden Rule: Focus on matching dates with events and years with significant historical milestones. Most competitive exam questions test your ability to recall which day corresponds to which event and which year marks an important milestone.
Quick Memory Tricks:
- 📌 National Days: "Jan 26 = Republic, Aug 15 = Independence, Oct 2 = Gandhi, Nov 26 = Constitution"
- 📌 International Days: "Mar 8 = Women, May 1 = Labour, Jun 5 = Environment, Jun 21 = Yoga"
- 📌 Indian History: "1947 = Independence, 1950 = Republic, 1971 = War, 1998 = Nuclear"
- 📌 Space: "1969 = ISRO, 1975 = Aryabhata, 2008 = Chandrayaan-1, 2014 = Mangalyaan"
Exam Strategy:
- Step 1: Read the question — identify if it's about a day or a year
- Step 2: Match the day with its significance (National/International)
- Step 3: For years, recall the historical event
- Step 4: For space missions, remember the year and mission name
- Step 5: Use elimination to remove wrong options
💡 Pro Tips for Important Days & Years
✅ Learn by Month
Jan (Republic, Army), Feb (Science), Mar (Women, Water), Apr (Health, Earth), May (Labour).
✅ Group International Days
Health = Apr 7, Environment = Jun 5, Peace = Sep 21, Human Rights = Dec 10.
✅ Indian Freedom Struggle Timeline
1857, 1885, 1919, 1930, 1942, 1947 — remember in sequence.
✅ Space Program Timeline
1969 (ISRO), 1975 (Aryabhata), 2008 (Chandrayaan-1), 2014 (Mangalyaan).
✅ Constitution Milestones
1949 (Adopted), 1950 (Republic), 1976 (42nd Amendment), 2019 (Art 370).
✅ World History Key Dates
1945 (UN formed), 1969 (Moon Landing), 1991 (USSR dissolved).
🇮🇳 Quick Reference: National Days Summary
📅 Day
- Republic Day
- Independence Day
- Gandhi Jayanti
- Martyr's Day
- Constitution Day
- Army Day
- Navy Day
- Air Force Day
- Teachers Day
- Children's Day
- Science Day
- Unity Day
📅 Date
- January 26
- August 15
- October 2
- January 30
- November 26
- January 15
- December 4
- October 8
- September 5
- November 14
- February 28
- October 31
🎯 Significance
- Republic (1950)
- Independence (1947)
- Gandhi's Birth
- Gandhi's Death
- Constitution adopted
- Army Foundation
- Operation Trident
- IAF Foundation
- Radhakrishnan's Birth
- Nehru's Birth
- Raman Effect
- Patel's Birth
🏷️ Key Person/Event
- Constitution
- Jawaharlal Nehru
- Mahatma Gandhi
- Mahatma Gandhi
- Dr. Ambedkar
- FM Cariappa
- 1971 War
- 1932
- Dr. Radhakrishnan
- Jawaharlal Nehru
- C.V. Raman
- Sardar Patel
🌍 Quick Reference: International Days Summary
📅 Day
- Women's Day
- Labour Day
- Health Day
- Environment Day
- AIDS Day
- Water Day
- Earth Day
- Yoga Day
- Population Day
- Peace Day
- Human Rights Day
- Teachers Day
- Food Day
- Happiness Day
📅 Date
- March 8
- May 1
- April 7
- June 5
- December 1
- March 22
- April 22
- June 21
- July 11
- September 21
- December 10
- October 5
- October 16
- March 20
🎯 Significance
- Women's Rights
- Workers' Rights
- WHO Foundation
- Environmental Awareness
- HIV/AIDS Awareness
- Water Conservation
- Environmental Protection
- Yoga Awareness
- Population Awareness
- World Peace
- Human Rights
- Teachers
- Food Security
- Happiness
🏷️ Key Organization
- UN Women
- ILO
- WHO
- UNEP
- UNAIDS
- UN Water
- UNEP
- UN
- UNFPA
- UN
- UN
- UNESCO
- FAO
- UN
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