Radiant (meteor shower) move along the comet's wake, and when the Earth moves through such debris, a meteor shower results. Because all of the debris is moving in roughly the same direction, the meteors which strike the atmosphere all "point" back to the direction of the comet's path. As an exception, the Geminids are a shower caused by the object 3200 Phaethon, which is thought to be a Palladian asteroid. The radiant is an important factor in observation. If the radiant point is at or below the horizon, then few if any meteors will be observed. This is because the atmosphere shields the
December 21 December 22, unless that date is a Sunday, in which case it's moved to the 23rd: December 22 "'Last Saturday before Christmas: December 22" Sunday before Christmas: December 23 December 26, unless that day is a Sunday, in which case the 27th: December 26 Last Friday before Christmas: December 28 Sunday after Christmas: December 30 December December is the twelfth and final month of the year in the Julian and Gregorian Calendars and is the seventh and last of seven months to have a length of 31 days. December got its name from the Latin word "decem" (meaning ten)