A centenary marks the 100th anniversary of a significant event, such as the founding of an organization, the end of a war, or the birth of a notable individual. Celebrations often include ceremonies, exhibitions, and various activities to honor the occasion and reflect on its historical importance. Centenaries can be observed in various fields, including history, culture, and science. For example, the centenary of World War I in 2018 involved numerous commemorative events worldwide, highlighting the war's impact on society and its lasting legacy.