Daylight’s impact on society is modulated by factors like geography and climate. Daylight is essential for safety, as it provides us with visual cues. It also affects social and economic activities, such as agriculture and tourism. Daylight shapes culture in that it may facilitate outdoor activities, sometimes enhancing cohesion in communities. The use of artificial light has driven the 24/7 society. Yet, working against the natural light/dark cycle is associated with multiple serious health conditions.