Laylat al-Mi'raj (Isra and Miraj) is observed on the 27th day of the Islamic month of Rajab. It is considered to be one of the most important events in the Islamic calendar. This day is observed as an official public holiday in some countries.
World Day for Laboratory Animals, also known as World Day for Animals in Laboratories or World Lab Animal Day, is an annual global observance held on April 24. It was established in 1979 by the National Anti-Vivisection Society (NAVS) based in the United Kingdom.
International Sculpture Day is an annual celebration established by the International Sculpture Center in 2015. It was created to raise awareness of sculpture as a form of art and help people learn more about famous sculpture masterpieces.
Fashion Revolution Day is a global observance held on April 24. It was created to raise awareness of the true cost of fashion.