The Orionid meteor shower is the second of two showers that occur each year as a result of Earth passing through dust released by Halley’s Comet
The Orionids meteor shower happens each year when Earth passes through the debris stream of Comet Halley, and meteoroids hit the atmosphere at nearly 90,000 mph. The Orionids generally begin on October 15 and end on October 29, with maximum generally occurring during the morning hours of October 20-22. The Orionids are barely detectable on the beginning and ending dates, but observers in the 
Northern Hemisphere will see around 20 meteors per hour at maximum, while observers in the Southern Hemisphere will see around 40 meteors per hour. The maximum can last two or three nights, although there is evidence of some fluctuation from year to year.
Since 2006, the Orionids have been one of the best showers of the year, with counts of 60 or more meteors per hour. The best time to view the Orionid meteors is after midnight when Earth’s rotation aligns our line of sight with the direction of Earth’s motion around the Sun.
Location of the Orionids For Southern Hemisphere Observers
This represents the view from mid-southern latitudes at about 2:00 a.m. local time around October 21. The graphic does not represent the view at the time of maximum, but is simply meant to help prospective observers to find the radiant location. The red line across the bottom of the image represents the horizon. 
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