Question: when does the antarctic circle have 24 hours of daylight
Answer: However , because of atmospheric refraction and mirages , and because the sun appears as a disk and not a point , part of the midnight sun may be seen on the night of the southern summer solstice up to about 50 minutes ( ′ ) ( 90 km ( 56 mi ) ) north of the Antarctic Circle ; similarly , on the day of the southern winter solstice , part of the sun may be seen up to about 50 ′ south of the Antarctic Circle .