Article Detail Which is the longest day in the year ? Answer: June 21 Similar Questions : 1. Which is the brightest planet ? Answer: Venus 2. Which is largest Delta of India ? Answer: Sundarban (W. Bengal) 3. Which is largest continent ? Answer: Asia 4. Which is longest river of South India ? Answer: Godavari 5. What is the name of tallest Animal ? Answer: Giraffe 6. Which is the largest desert in India ? Answer: Thar (Rajasthan) 7. Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) Read more from - Longest and Largest