The moon phases in December
Based on the graphic below you can predict the phases of the moon all the way into January.
based on the lunar calendar you can tell that the moon changes from a new moon to a full moon every 14-16 days. With that information you can predict the phase of the moon into the next year. you can predict that it will probably be a full moon around the 14-16 of January, and then after that it will be a new moon around the 30-1.