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high importance~3 Q in Tier 1⚡ 12 shortcuts6 subtopics

Important Days

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National days (India)

DateDayWhy
12 JanNational Youth DayBirth anniversary of Swami Vivekananda
15 JanArmy DayK.M. Cariappa took over as C-in-C (1949)
25 JanNational Voters' DayECI founded 25 Jan 1950
28 FebNational Science DayDiscovery of the Raman effect (1928)
1 JulNational Doctors' DayDr B.C. Roy
29 AugNational Sports DayMajor Dhyan Chand's birthday
5 SepTeachers' DayDr S. Radhakrishnan
14 SepHindi DiwasHindi adopted as official language (1949)
15 SepEngineers' DayM. Visvesvaraya
8 OctAir Force DayIAF formed 1932
31 OctNational Unity Day (Rashtriya Ekta Diwas)Sardar Patel
14 NovChildren's DayNehru
26 NovConstitution Day (Samvidhan Divas)Constitution adopted 1949
4 DecNavy DayOperation Trident (1971)
22 DecNational Mathematics DaySrinivasa Ramanujan
23 DecKisan DiwasChaudhary Charan Singh
25 DecGood Governance DayA.B. Vajpayee

International days

DateDay
8 MarInternational Women's Day
22 MarWorld Water Day
7 AprWorld Health Day (WHO founded 1948)
22 AprEarth Day
21 JunInternational Day of Yoga (from 2015)
8 SepInternational Literacy Day
16 SepWorld Ozone Day (Montreal Protocol)
1 DecWorld AIDS Day
10 DecHuman Rights Day (UDHR 1948)

Detailed notes

Days linked to a person's birth or death

DateDayPerson
12 JanuaryNational Youth DaySwami Vivekananda
28 FebruaryNational Science DayRaman effect (1928)
1 JulyNational Doctors' DayDr B.C. Roy
29 JulyInternational Tiger Day-
29 AugustNational Sports DayMajor Dhyan Chand
5 SeptemberTeachers' DayDr S. Radhakrishnan
15 SeptemberEngineers' DaySir M. Visvesvaraya
2 OctoberGandhi Jayanti + Int'l Day of Non-ViolenceMahatma Gandhi
31 OctoberNational Unity DaySardar Patel
14 NovemberChildren's DayJawaharlal Nehru
22 DecemberNational Mathematics DaySrinivasa Ramanujan (since 2012)
30 JanuaryMartyrs' DayGandhi's assassination

National days with a theme of their own

25 January - National Voters' Day (Election Commission founded 25 Jan 1950); 26 January - Republic Day (Constitution came into force 1950); 14 September - Hindi Diwas (Hindi adopted as official language in 1949); 15 August - Independence Day; 11 May - National Technology Day (Pokhran tests, 11 May 1998); 24 January - National Girl Child Day.

International days (UN and others)

DateDay
8 MarchInternational Women's Day
22 MarchWorld Water Day
7 AprilWorld Health Day (WHO founded 7 April 1948)
22 AprilEarth Day
1 MayInternational Labour Day
5 JuneWorld Environment Day
21 JuneInternational Day of Yoga (first observed 2015; proposed by India)
12 AugustInternational Youth Day
16 OctoberWorld Food Day (FAO founded 16 October 1945)
24 OctoberUnited Nations Day (UN founded 24 October 1945)
1 DecemberWorld AIDS Day
10 DecemberHuman Rights Day (UDHR adopted 10 December 1948)

The three defence forces days

Army Day - 15 January (K.M. Cariappa became the first Indian Commander-in-Chief on 15 January 1949); Air Force Day - 8 October; Navy Day - 4 December (Operation Trident, 1971).

Quick revision

  • Birth-linked: 12 Jan Vivekananda, 5 Sep Radhakrishnan, 15 Sep Visvesvaraya, 29 Aug Dhyan Chand, 14 Nov Nehru, 22 Dec Ramanujan, 1 Jul B.C. Roy.
  • 28 Feb Science (Raman 1928); 11 May Technology (Pokhran 1998); 25 Jan Voters; 14 Sep Hindi.
  • 7 Apr Health (WHO 1948); 16 Oct Food (FAO 1945); 24 Oct UN (1945); 10 Dec Human Rights (UDHR 1948).
  • Yoga 21 June - first observed 2015, India's proposal; Earth Day 22 April; Water 22 March.
  • Army 15 Jan, Air Force 8 Oct, Navy 4 Dec.

Types of questions asked

Every way this subtopic shows up in exams — how to recognise it, the formula or logic to use, and a solved example.

Type 1: Day ↔ birth/death anniversary of a personvery common4 practice Q
How to spot it:

'National Sports Day honours', 'Teachers' Day is the birth anniversary of', 'Youth Day', 'Mathematics Day', person-linking questions.

  1. Birth-linked chain: 12 Jan Vivekananda (Youth), 28 Feb Raman effect (Science), 1 Jul B.C. Roy (Doctors), 29 Aug Dhyan Chand (Sports), 5 Sep Radhakrishnan (Teachers), 15 Sep Visvesvaraya (Engineers), 14 Nov Nehru (Children), 22 Dec Ramanujan (Mathematics).
  2. 30 Jan - Martyrs' Day, the day Gandhi was assassinated (1948).
  3. If the question names a profession or field, first look for the person-date row.

Example: National Mathematics Day (22 December) commemorates the birth anniversary of —

Srinivasa Ramanujan (born 22 December 1887); observed since 2012. Teachers' Day (5 Sep) marks Radhakrishnan's birthday.

Type 2: National day ↔ datevery common3 practice Q
How to spot it:

'National Voters' Day', 'National Technology Day', 'Hindi Diwas', 'National Unity Day', date-to-theme matching.

  1. Republic dates: 26 Jan Republic Day; 25 Jan National Voters' Day (EC founded 25 Jan 1950); 24 Jan National Girl Child Day.
  2. 11 May National Technology Day - Pokhran nuclear tests of 11 May 1998. 14 Sep Hindi Diwas (official-language resolution 1949). 31 Oct National Unity Day - Sardar Patel's birthday.
  3. 28 Feb National Science Day - Raman effect announced 28 February 1928.

Example: National Unity Day, marked on 31 October, celebrates the birth anniversary of —

Sardar Vallabhbhai Patel - the 'Iron Man' who integrated the princely states.

Type 3: International day ↔ date (UN and others)very common4 practice Q
How to spot it:

'World Water/Health/Environment/Food day', 'International Yoga Day', 'Human Rights Day', UN-day matching.

  1. Spring cluster: 8 Mar Women, 22 Mar Water, 7 Apr Health (WHO founded 7 Apr 1948), 22 Apr Earth, 1 May Labour.
  2. Mid-year: 5 Jun Environment, 21 Jun Yoga (first observed 2015, India's proposal), 12 Aug Youth, 29 Jul Tiger.
  3. Year-end: 16 Oct Food (FAO 1945), 24 Oct UN (founded 1945), 1 Dec AIDS, 10 Dec Human Rights (UDHR 1948).

Example: World Health Day is observed on 7 April because —

The World Health Organization was founded on 7 April 1948 - the date of its constitution coming into force.

Type 4: Defence forces dayscommon2 practice Q
How to spot it:

'Army/Navy/Air Force day', dates of the three services, Operation Trident link.

  1. Army Day - 15 January (K.M. Cariappa became the first Indian Commander-in-Chief on 15 Jan 1949).
  2. Air Force Day - 8 October (the IAF was founded 8 Oct 1932).
  3. Navy Day - 4 December (recalls Operation Trident's missile attack on Karachi, 1971).

Example: Indian Navy Day is celebrated on —

4 December - commemorating Operation Trident of the 1971 war; Army Day is 15 January and Air Force Day 8 October.

Type 5: Republic-era constitutional daysoccasional2 practice Q
How to spot it:

'Why is 26 January Republic Day', 'Constitution came into force on', 'Samvidhan Divas', founding dates behind days.

  1. 26 January 1950 - the Constitution came into force (adopted 26 November 1949 - Samvidhan Divas, Constitution Day).
  2. 15 August 1947 - Independence Day.
  3. 25 January - Voters' Day (Election Commission set up 25 January 1950).

Example: Why is Republic Day celebrated on 26 January?

The Constitution came into force on 26 January 1950 - the date chosen to honour the 1930 Purna Swaraj declaration of 26 January.

Shortcut tricks

⚡ Birthday days — pair the person

12 Jan Vivekananda → youth · 29 Aug Dhyan Chand → sports · 5 Sep Radhakrishnan → teachers · 15 Sep Visvesvaraya → engineers · 14 Nov Nehru → children · 22 Dec Ramanujan → maths.

Example: National Mathematics Day (22 December) honours —

Srinivasa Ramanujan (born 22 Dec 1887).

⚡ Two 'Feb–Nov' science/constitution anchors

28 Feb = Raman effect (Science Day). 26 Nov = Constitution adopted (26 Jan = enforced → Republic Day).

Where students lose marks

  • Constitution Day is 26 November (adoption); Republic Day is 26 January (enforcement).

  • National Science Day marks the discovery of the Raman effect (1928), not Raman's birthday (7 Nov).

  • Engineers' Day (15 Sep) is Visvesvaraya's birthday; Teachers' Day (5 Sep) is Radhakrishnan's.

Practice sets — 17 questions

Sets of 10, mixed across the question types above. Each answer comes with a step-by-step explanation.

Topic test · 10 questions

Suggested time 3 min · wrong answers go to your mistake notebook automatically.