We have had this one before. The concept of time of day becomes meaningless at the North Pole, but there is a long-established convention that GMT is used.
Pelham Barton, Birmingham U.K.
Greenwich mean time. The same is true at the South pole, and the entire surface of the moon.
Bernard O'Leary, Dublin Ireland
The time of day at the poles has no practical significance; it is either Summer or Winter (or somewhere in between). Of course, the moment you take a step you are technically in a time zone. The closer you are to the equator, the greater the contrast between night and day and therefore the greater significance of the time of day.
Chris Wright, Twickenham UK
As all the lines of longtitude meet at the North Pole, theoretically, it could be any time throughout twenty four hours. However, it generally taken to be whatever time it is Greenwich Mean Time.
Ray Mitcham, Southport U.K.
By convention the time at the North (and South) Pole is Zulu time, also known as GMT. This applies to a large region around both poles.
Simon Blake, Shrewsbury England
Both poles run on GMT, as does space, and before you ask no there isn't such a thing as space daylight savings time!
