International Noise Awareness DayI is an annual observance held on the last Wednesday of April. This global campaign aims to raise awareness of the impact of noise on the health and welfare of people.
Administrative Professionals' Day, also known as Secretaries Day or Admin Day, is an informal professional observance that recognizes the work of administrative support professionals. In North America, it is celebrated on the Wednesday of the last full week of April.
World Intellectual Property Day is an annual observance held on April 26. It was established by the World Intellectual Property Organization (WIPO) in 2000 and is considered one of the United Nations official observances.
Until recently, Memorial Day for the Victims of the Chernobyl Nuclear Accident was observed only in the countries directly affected by the accident. However, in 2016 the United Nations General Assembly designated April 26 as International Chernobyl Disaster Remembrance Day.
Denim Day is an annual campaign that aims to raise awareness of rape and sexual assault. On a Wednesday in April, people are encouraged to wear jeans to make a social statement and protest against the misconceptions surrounding sexual assault.