UN English Language Day is observed annually on 23 April. The event was established by UN's Department of Public Information in 2010 "to celebrate multilingualism and cultural diversity as well as to promote equal use of all six official languages throughout the Organization.

World Intellectual Property Day is observed annually on 26 April. The event was established by the World Intellectual Property Organization (WIPO) in 2000 to "raise awareness of  how patents, copyright, trademarks and designs impact on daily life" and "to celebrate creativity, and the contribution made by creators and innovators to the development of societies across the globe".

The International  Dance Day is celebrated every year on 29th April. The main purpose of Dance Day events is to attract the attention of the wider public to the art of dance. Emphasis should be given to addressing a new public, people who do not follow dance events during the course of the year. Every […]

International Jazz Day is an International Day declared by the United Nations Educational, Scientific and Cultural Organization in 2011 "to highlight jazz and its diplomatic role of uniting people in all corners of the globe." It is celebrated annually on April 30.

International Labour Day (Labor Day in the United States) is an annual holiday to celebrate the achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.

We observe World Tuna Day to highlight the importance of sustainably managed fish stocks in achieving the 2030 Agenda for Sustainable Development.

World Red Cross and Red Crescent Day is an annual celebration of the principles of the International Red Cross and Red Crescent Movement. World Red Cross Red Crescent Day is celebrated on 8 May each year. This date is the anniversary of the birth of Henry Dunant, who was born on 8 May 1828.

International Migratory Bird Day is a conservation initiative that brings awareness on conserving migratory birds and their habitats throughout the Western Hemisphere.

World Bee Day is celebrated on May 20. On this day Anton Janša, the pioneer of beekeeping, was born in 1734. The purpose of the international day is to acknowledge the role of bees and other pollinators for the ecosystem.