The short answer is that as it orbits the Sun. The Secret: Earth’s 23.5-Degree Tilt
, the Sun is at his happiest. He climbs high into the center of the sky, puffing out his chest and moving with a slow, golden stroll. He lingers over the sparkling lakes and green forests, stopping to watch every backyard barbecue and late-afternoon ball game. Because he takes such a wide, high path across the dome of the sky, it takes him a very long time to reach the horizon. He’s like a guest who keeps finding "one more thing" to talk about before heading out the door. But the Sun has a sister, the why are days longer in the summer
As Earth orbits the Sun, its axis always points in the same direction . This means that for part of the year, one hemisphere is , while the other is tilted away . Science Lab: Why are summer days longer? (Canon Official) The short answer is that as it orbits the Sun
The most dramatic example of this phenomenon occurs at the poles. Because the Earth is a sphere, the 23.5-degree tilt has an exaggerated effect at high latitudes. He lingers over the sparkling lakes and green
This same tilt causes winter’s short days when your hemisphere is pointed away.
To understand why the day is longer, visualize the sun’s path across the sky during the summer solstice (around June 21st in the Northern Hemisphere).
That hemisphere is tilted away from the Sun.