Civics and observance days in India: What is celebrated on 20 August? In the Indian national calendar of commemorative days, identify the observance associated with 20th August. Choose the correct observance.

Topic: Indian national commemorative/awareness days

Given data

• Date in question: 20 August.

Concept/Approach
Multiple observances fall on 20 August globally and in India. In the Indian civics/GK context, 20 August is marked as Sadbhavana Diwas (Harmony Day) to commemorate the birth anniversary of former Prime Minister Rajiv Gandhi. (Note: The same date is also observed internationally as World Mosquito Day and is sometimes used in India as Akshay Urja Diwas for renewable energy awareness; however, the standard Indian polity GK answer refers to Sadbhavana Diwas.)

Step-by-step identification
List candidate observances → check Indian national civics list → 20 Aug → Sadbhavana Diwas.

Common pitfalls

• Picking World Mosquito Day (also on 20 Aug) when the question expects the Indian national observance.

Final Answer
Sadbhavana Diwas (Harmony Day)