March 18: the crescent moon will be clustered with Jupiter, Mars, and Saturn
March 19: Jupiter, Mars, and Saturn will still be clustered together
Also March 19: it's the first day of spring and the sun will rise due east and set due west
March 20: Mars slides below Jupiter
And when all of these things happen in just a couple of days ... it's a conjunction conjunction.
![](https://npr.brightspotcdn.com/dims4/default/fac952b/2147483647/strip/true/crop/719x960+0+0/resize/880x1175!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Flegacy%2Fsites%2Fkumd%2Ffiles%2F202003%2Fconjunction_junction.jpg)
Got the song stuck in your head now? You can share Schoolhouse Rock's Conjunction Junction with people who have never heard it here.