Norway doesn't have sun in the night. It experiences a phenomenon called the midnight sun during the summer months. This means that the sun stays above the horizon for 24 hours, but it doesn't mean that there is sun in the night.

Here's why:

* Earth's Tilt: The Earth is tilted on its axis, and this tilt is responsible for the seasons. During the summer solstice (around June 21st), the Northern Hemisphere is tilted towards the sun.

* Polar Regions: Norway is located in the northern hemisphere, and its northernmost regions are close to the Arctic Circle. The further north you go, the more pronounced the effect of the Earth's tilt becomes.

* Continuous Daylight: Because of the tilt, the sun stays above the horizon for extended periods in the summer months. This means that the sun doesn't set at all, even though it's technically "night."

Important Note: The midnight sun is not the same as "sun in the night." The sun is still setting and rising, it's just that the period of darkness is extremely short or nonexistent in certain regions during summer.