The midnight sun phenomenon occurs in Yukon and other northern regions during summer when the sun remains visible for extended periods, barely setting or not setting at all near the summer solstice. Conversely, winter brings extremely short days with limited daylight. In Whitehorse (latitude 60°N), the longest day has about 19 hours of daylight, while the shortest has about 5 hours. Further north, daylight variations are more extreme. The midnight sun affects everything from tourism (summer festivals and activities) to daily life (sleep patterns, outdoor activities). Winter darkness presents challenges including seasonal affective disorder and energy demands for lighting. Yukoners adapt to extreme daylight variations, often embracing summer's extended days for outdoor pursuits. The midnight sun is a defining characteristic of northern Canadian life and a tourist attraction.