How long does the Antarctic night last, and what months does it span?

Question

I'm doing research for my novel, and I can't seem to find this little bit anywhere, not even in standard Yahoo! searches or Wikipedia! I really just need to know the month ranges. Thanks!

Answer 1

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Answer 2

It depends on the time of year, and where in Antarctica. At the Arctic and Antarctic circles, in theory the nights would get longer and longer until at mid winters the sun would not rise. In theory because of atmospheric refraction you have to be below the Antarctic cirlce for this to happen. And even thought the sun might not rise, if you are close to the Antarctic circle there would be significant twilight - enough that it doesn't feel like night. The further south you go from the sooner the sun stops rising before mide winters, and later after for rising, and the less the twilight at midnight. A lot of the coast of Antarctica is around or just below the Antarctic circle. Finally, if you go south enough that you are at the South Pole there is only 1 day and 1 night per year. Starting at sun rise around Sept 21 the sun slowly spirals round and round the horizon until it reaches it maximum hight about Dec 21, and then starts to descend. It sets about March 21. At the South Pole, after sunset, and before sun rise, there is a significant period of twilight - let's say a month (depends on how you define twilight - and there a number of defitions, civil, nautical, astronomical,....). But there is about 4 months of good solid night, with 2 week when it is brighter ever month due to the moon.

Answer 3

The 24 hour day/night effect begins at the arctic (north) and antarctic (south) circles which are at 66.5 degrees north lattitude and 66.5 degrees south lattitude. At this very line, each experiences all day/night behavior on each of the soltices, first day of summer and winter.
With respect to antarctic circle, the further south one travels, the more days they have the 24 hour syndrome. At the poles, they each get the full 6 months of all day/night. Since the anarctic circle lies in the southern hemisphere, the summer months or 24 hour days can lie in between December and June. Their winter is June-Decemeber which means 24 hours of darkness.
The arctic circle is reversed because when one hemisphere is summer, the other has winter.

Answer 4

It seems to me that it would last six months, just like the Arctic night. And since it is in the southern hemisphere, that would be during the summer months.