A triple conjunction is an astronomical event, where two planets or a planet and a star meet each other three times in a short period either in opposition or at the time of inferior conjunction, if an inferior planet is involved. The visible movement of the planet or the planets in the sky is therefore normally prograde at the first conjunction, retrograde at the second conjunction and again prograde at the third conjunction.
The most historically important triple conjunction was that one between Jupiter and Saturn in 7 BCE-5 BCE, which has been proposed as the explanation for the star of Bethlehem. Triple conjunctions between Jupiter and Saturn—so-called Greatest Conjunctions—last took place in 1682–1683, 1821 (only in right ascension), 1940–1941 and 1981. It will not occur again until 2238–2239.
I’m not big on Christianity. But I am kind of big on symbolism. So I designed this T-Shirt to symbolism the Birth of Christ, by taking the symbol for Jupiter and Saturn and putting them together! Click or Tap to order! It would mean the world to me!