The daily cessation of daylight in the French capital is a variable event, dependent upon the Earth’s axial tilt and its orbital position relative to the sun. This phenomenon, the end of the day’s natural illumination, fluctuates predictably throughout the year, reaching its latest occurrence during the summer solstice and its earliest during the winter solstice. Factors influencing the exact moment include the observer’s altitude and atmospheric conditions.
Precise knowledge of the end-of-day twilight period is crucial for photographers seeking to capture the “golden hour,” the period of diffuse, warm light immediately preceding it. Furthermore, understanding this temporal variation is essential for city planners designing outdoor lighting systems, as well as for individuals planning evening activities and optimizing energy consumption related to artificial illumination. Historically, tracking celestial events was critical for agricultural planning and religious observances.
