Important National and International Days

This is a play on words. 'April' is the month associated with 'April Fools,' but more specifically, the answer relies on the pun 'A-Pril' (A-P-R-I-L) or simply being a nonsense riddle answer.

Earth Day is observed globally on April 22 each year to raise awareness about environmental protection. The date was chosen in 1970 for the first Earth Day and has been celebrated annually since, making it one of the largest secular observances worldwide.

September 5th is celebrated as Teacher's Day in India to honor the birth anniversary of Dr. Sarvepalli Radhakrishnan, who was India's first Vice President and second President. He was a renowned philosopher and educator, and when he became President, his students requested to celebrate his birthday as Teacher's Day. Martyr's Day is January 30th, Navy Day is December 4th, and Father's Day is a June celebration.

South Korea celebrates its National Liberation Day (Gwangbokjeol) on August 15, commemorating the country's liberation from Japanese colonial rule in 1945. This is one of South Korea's most important national holidays, marking the end of 35 years of Japanese occupation.

Rajiv Gandhi was assassinated on May 21, 1991. The first anniversary of his death in 1992 was officially designated as Anti-Terrorism Day by the Government of India to honor his memory and raise awareness against terrorism. This day is observed annually with pledges and ceremonies promoting national unity and peace.

World Population Day is observed annually on July 11. It was established by the United Nations in 1989 after the world population reached 5 billion on July 11, 1987 (known as 'Five Billion Day'). The day aims to raise awareness about population issues and their impact on development and the environment.

World No Tobacco Day is observed annually on May 31. It was created by the World Health Organization (WHO) in 1987 to draw global attention to the tobacco epidemic and the preventable death and disease it causes. The day aims to reduce tobacco use through awareness and policy advocacy.

National Technology Day is observed on May 11 in India to commemorate the Pokhran nuclear tests of 1998 (Operation Shakti). On this day, India successfully conducted five nuclear tests, establishing itself as a nuclear weapons state.

International Mother Language Day is observed annually on 21 February and was proclaimed by UNESCO in 1999 to promote linguistic and cultural diversity. The day commemorates the language movement in Bangladesh where students sacrificed their lives for their mother tongue.

International Mother Language Day has always been observed on February 21 since its inception in 2000. The date commemorates the 1952 language movement in Bangladesh and has never been changed to February 20.

September 24 is observed as International Girl Child Day to create awareness about gender equality and the rights of the girl child. The day focuses on highlighting gender inequalities and promoting opportunities for girls. It was established by the United Nations to address discrimination and violence against girls.

Engineer's Day in India is celebrated on September 15th, which is the birth anniversary of Sir Mokshagundam Visvesvaraya, a legendary civil engineer and statesman. He was awarded the Bharat Ratna for his contributions to nation-building. Vishwakarma is the divine architect but not specifically honored on Engineer's Day.

Teacher's Day in India is celebrated on September 5th, which marks the birthday of Dr. Sarvapalli Radhakrishnan, a renowned philosopher and India's second President. When he became President, his students wanted to celebrate his birthday, but he suggested honoring teachers instead. Nehru's birthday is Children's Day.

World Population Day is observed annually on July 11th. It was established by the United Nations Development Programme in 1989 to raise awareness about population issues and their impact on development and the environment.