Peak: December 13, 1920, around 09:00 UTC — up to about 150 meteors an hour under a dark sky. The Moon will be 8% lit: a dark sky: a good year for the Geminids. Meteors seem to come from Gemini; the debris is from asteroid 3200 Phaethon. The year's richest shower, with many bright meteors, visible from both hemispheres. Peak times and rates: the International Meteor Organization's working list.