Why Norway have a nighttime in the summer and no daytime winter?

This statement is not accurate. Norway, like all other places on earth, experiences both daytime and nighttime throughout the year, regardless of the season.

During the summer months, the days are longer in Norway due to the tilt of the Earth's axis and its location in the Northern Hemisphere. The sun rises earlier and sets later, resulting in more daylight hours. However, the nights are still present, although shorter.

Similarly, during the winter, the days are shorter due to the same axial tilt. The sun rises later and sets earlier, leading to fewer daylight hours. However, there is still daytime during these months, although shorter compared to the summer.

Norway does experience periods of the midnight sun during the summer months, particularly above the Arctic Circle, where the sun remains above the horizon for 24 hours. Conversely, during the winter, some areas of Norway experience a period of polar nights when the sun remains below the horizon for an extended duration.

In summary, Norway does have both daytime in the summer and nighttime in the winter, just like other parts of the world, although the duration of these periods varies depending on the season.