The lenght of the day depends on how close you are to equator. The closer you are to equator, the less difference there is between the lenght of the day in summer and winter.
Here, north for the equator, we have shorter days in the winter and longer days in the summer, while south for the equator, they have longer days in the winter, and shorter days in the summer. On the equator the days have the same lenght. Re Arctic and Antartica, I'm pretty sure it's not the whole winter and summer it is like that, but the most nothern place is dark on the shortest day (which is the 21/22 December), but light on the longest day (which I think is in June sometimes. Sankt Hans Day, I think it is) north for the equator, while it's the opposite on the most southern place: there, on Dec 21/22, it's light the whole day, and on a day in June (I think), it's dark the whole day.
But you're spot in with the reason why :)
This is stuff I remember from school; I haven't looked at Wiki either, so don't kill me if there's something I remember wrong ;)
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Here, north for the equator, we have shorter days in the winter and longer days in the summer, while south for the equator, they have longer days in the winter, and shorter days in the summer. On the equator the days have the same lenght.
Re Arctic and Antartica, I'm pretty sure it's not the whole winter and summer it is like that, but the most nothern place is dark on the shortest day (which is the 21/22 December), but light on the longest day (which I think is in June sometimes. Sankt Hans Day, I think it is) north for the equator, while it's the opposite on the most southern place: there, on Dec 21/22, it's light the whole day, and on a day in June (I think), it's dark the whole day.
But you're spot in with the reason why :)
This is stuff I remember from school; I haven't looked at Wiki either, so don't kill me if there's something I remember wrong ;)