There was a similar conjunction in the 1600s but it was difficult to see. So, there must be one about every 400 years, which would put one right around the birth of Christ.
Please see post 5
Jupiter passes Saturn in orbit once every 19.859 years, give or take. The exact interval varies a bit depending on the location of the earth in its orbit, and other factors related to the shape of the planets’ orbits. The orbits of Jupiter and Saturn are not in the same plane, so Jupiter is usually a little north or south of Saturn when he passes him. If Jupiter overtakes Saturn near the point where their orbits appear to cross, they will appear closer together at nearest approach. In principle, Jupiter could occlude (hide, eclipse) Saturn, though the chances of that happening in any 10,000 year period are very small. But one day, ...