Antarctica - Time Zones

Time in Antarctica – Antarctica is the only continent without a time zone.

Antarctica sits on every line of longitude, due to the South Pole being situated near the middle of the continent. Theoretically Antarctica would be located in all time zones, however areas south of the Antarctic Circle experience extreme day-night cycles near the times of the March and September equinoxes. This makes it difficult to determine which time zone would be appropriate. For practical purposes time zones are usually based on territorial claims, however many stations use the time zone of their supply base, for example, McMurdo Station and Amundsen–Scott South Pole Station use New Zealand time due to their main supply base being Christchurch, New Zealand.