They disagree because of working hours in Norway. Because they don't work based on 'dark' or 'light', but only see the time on the clock.
The nearly 24-hour solar phenomenon only lasts for a few months. Usually from April to August. Some areas adjacent to the South Pole and the North Pole have a natural phenomenon called the midnight sun, which makes the sunshine for 24 hours, aka no night. The cause of this phenomenon is the rotational movement, and revolution of the Earth, as well as the rotational position of the Earth, which is tilted at an angle of 23.4 degrees. This movement makes some parts of the Earth get more sunlight in 24 hours than other parts.
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