Peak: October 20, 1917, around 19:00 UTC — up to about 20 meteors an hour under a dark sky. The Moon will be 22% lit: a dark sky: a good year for the Orionids. Meteors seem to come from Orion; the debris is from Halley's Comet. Halley's other shower: fast meteors, often with lasting trains. Peak times and rates: the International Meteor Organization's working list.