21.
World Hepatitis Day is observed annually on which date to raise awareness about the global burden of viral hepatitis?
22.
What is the primary objective of observing the International Day for the Conservation of the Mangrove Ecosystem?
23.
Which international organization proclaimed the International Day for the Conservation of the Mangrove Ecosystem?
24.
The International Day for the Conservation of the Mangrove Ecosystem is observed annually on which date?
25.
What is the primary objective of observing the International Day of Friendship?
26.
In which year did the United Nations officially proclaim July 30 as the International Day of Friendship?
27.
When is the International Day of Friendship observed annually?
28.
Which country officially established National Parents' Day as a holiday in 1994?
29.
The observance of National Parents' Day is primarily aimed at:
30.
National Parents' Day in India is celebrated on which date?