Check this out.. on the 15 of Aug 2021, there will be a very interesting conjunction in the Jovian Lunar System. [Edits made to elaborate]
It happens during a Jovian double eclipse when Europa & Ganymede both cast a shadow on Jupiter.
However, as both are transiting, Europa's faster orbital speed causes it to overlap Ganymede, and as it passes, it is also partially eclipsed.
Only problem, it happens during the middle of the day [below the horizon for the USA]. Screenshots courtesy of Stellarium.
Edited by rkelley8493, 10 July 2021 - 10:23 PM.