Skywatchers in October can witness two comets alongside Orionid meteor shower. Comet SWAN, with a 22,554-year orbit and a vast tail spanning five full Moons, will be visible during the nights of October 20 to 23 with the naked eye. On October 21, Comet Lemmon, discovered earlier this year, will also be visible, coinciding with Orionids peaking between October 22-23.