This is one of the best meteor showers of the year and never seems to disappoint observers.
This meteor shower gets the name "Geminids" because it appears to radiate from the constellation Gemini. An observer in the Northern Hemisphere can start seeing Geminid meteors as early as December 6, when one meteor every hour or so could be visible. During the next week, rates increase until a peak of 50-80 meteors per hour is attained on the night of December 13/14. The last Geminids are seen on December 18, when an observer might see a rate of one every hour or so.
For observers in the Southern Hemisphere, the Geminid radiant never climbs far above the horizon, and this considerably reduces the number of Geminid meteors you are likely to see. Nevertheless, on the night of maximum, it is possible to see 20 meteors per hour coming up from the northern horizon.
There are other, weaker meteor showers going on around the same time as the Geminids, but the best way to know if the meteor you see is a Geminid is to mentally trace the meteor backwards. If you end up at Gemini then you have probably seen a Geminid meteor! If you are not sure where Gemini is in the sky, the following charts will help you find it from both the Northern Hemisphere and Southern Hemisphere