1. April1day: International April Fool's Day (April Fool's Day or April Fool's Day) is also called April Fool's Day and Humor Day. April Fool's Day falls on April 1 day of the Gregorian calendar, which is a popular folk festival in the west since19th century and has not been recognized as a legal holiday by any country. On this day, people cheat and play tricks on each other in various ways, and often at the end of the joke, they will expose and announce that the object of the joke is a "fool".

2. April 2nd: International Children's Book Day, which is also the birthday of Danish children's literature master Andersen. On April 2 every year, he will be reborn in the reading of countless children around the world. 1April 2, 967, ibby designated Andersen's birthday as "International Children's Book Day".

3. April 7th: World Health Day (1950) to commemorate the adoption of the organization's charter. 1948 In June, at the first World Health Assembly of the United Nations held in Geneva, the World Health Organization was formally established, and it was decided to designate April 7th as World Health Day every year, and various countries launched various commemorative activities.

April 15: Africa Freedom Day. On April 1958 16-22, the first meeting of independent African countries was held in Accra, Ghana. At the end of the meeting, a declaration was issued calling on African countries to unite, oppose colonialism, safeguard sovereignty and independence, and support the people of non-independent African countries in their struggle for independence and freedom.

5. April 2 1: National Entrepreneur Activity Day (1994) is organized by China Enterprise Management Association and China Entrepreneur Association on April 2/0/every year, aiming at the determined theme, which not only improves the communication between enterprises, but also reflects the country's good hope for enterprises.

Extended data:

April 2nd is the birthday of Danish fairy tale master Andersen. 1967, IBBY designated this day as "International Children's Book Day" to arouse people's love for reading and attention to children's books.

At present, ibby has 70 national chapters. Every year, 1 national chapters are selected to hold "International Children's Book Day", the theme of which is determined, and outstanding domestic writers and famous illustrators are invited to write short articles, design posters, publicize books for children all over the world and promote reading. Many national chapters also promote "International Children's Book Day" by organizing activities such as media, schools and public libraries, and organize various activities, such as meeting writers and illustrators, writing competitions or announcing book prizes.

References:

International Children's Book Day _ Baidu Encyclopedia