The Galilean moons of Jupiter (Io, Europa, Ganymede, and Callisto) are arranged in numerical order (beginning) at 10:30 UT, 20th January 2018.
Jupiter's Galilean moons are arranged in descending numerical order between 03:15 UT - 15:15 UT, 14th July 2017.
Jupiter's Galilean moons are arranged in numerical order between 15:30 - 23:30 UT, 4th July 2017.
Jupiter's Galilean moons are arranged in descending numerical order at ~18:00 UT, 22nd June 2017.
Europa, Io, and Io's shadow, start to transit Jupiter at 00:28 UT, 20th June 2017.
Io and Europa will start to transit Jupiter at ~23:30 UT 19th June 2017.
Europa and Io's shadows are observable on the disk of Jupiter at ~23:30 UT, 12th June 2017.
Jupiter's Galilean moons are arranged in descending numerical order between 14:40 UT - 23:30 UT, 8th June 2017