Anywhere within the northern arctic circle.
There are 31 days in December, therefore there are 31 x 24 = 744 hours in the month.
There are 8760 hours in a standard year and 8784 in a leap year. At any time is dark somewhere on Earth, so you could say there are 8760 hours of darkness in a year and 8784 of darkness in a leap year. Another way of looking at it is where you are on the planet. At different times of year there are different amounts of darkness and daylight and then there is twilight. You could say it is dark anywhere for about half the year, so that would be 4380 hours in a normal year and 4392 hours in a leap year.
in the area where trees are not there
12
No, you'd have 24 hours of sunlight.
Darkness
24 hours of daylight or darkness respectively.
24 hours of darkness.
12 hours of daylight. 12 hours of darkness.
There are 21 hours and 50 minutes from sunrise to sunset, but twilight probably lasts throughout the two hours until the next sunrise.
Depends on what time of year it is
12 hours of sunlight and 12 hours of darkness
4
Anywhere within the northern arctic circle.
The sun sets at the South Pole about March 21 and does not rise again until about September 21. This means that on 21 June, there is no sunrise -- or 24 hours of darkness on that date.
24 hours