Longest Day Of The Year 2025 Germany 2025. Because the gregorian calendar is not exactly aligned with the time it takes for the earth to rotate around the sun, the day on which the summer solstice falls varies slightly from. Is the summer solstice the longest day or the longest day of daylight?

So, the day becomes short and the night becomes long. During the winter solstice, the sun will be at its lowest elevation in the sky.