On December 21, the winter solstice (in the northern hemisphere), one of the most important astrological moments of our lifetimes will occur. This moment is the Jupiter-Saturn conjunction. Jupiter and Saturn conjunct (meet together in the sky) and meld their very different energies approximately every 20 years. They last conjoined on May 28, 2000. Making this a generational cycle at any time—however, this year they meet in an air sign, setting off a new pattern that will last for the next 200 years.