Look to the night sky during the holidays for an added gift because, for the first time since 1977, there will be a full moon on Christmas Day. December's full moon - the last one for the year - is called the Full Cold Moon because it appears during the beginning of winter in the Northern Hemisphere. In Singapore, the moon's peak this year will occur at 7.11pm. This rare event will not happen again until 2034. Dr John Keller, a scientist from United States space agency Nasa's Goddard Space Flight Centre, said: "As we look at the moon on such an occasion, it is worth remembering that the Moon is more than just a celestial neighbour. The geologic history of the Moon and Earth is intimately tied together, such that the Earth would be a dramatically different planet without the Moon."