The problem is the light of the upcoming day. I found that the Nightcam can resolve Jupiter until the sun has reached an "altitude" of -6° (beyond the horizon).

Here my calculated track estimates for the month of April:

The images show a red line for the moon track and a blue line for the Jupiter track. The upper ends show the positions of the both at the same time, beginning their visible tracks. The two bodies reach the ends of their lines at same time too.