This evening there will be a short double shadow transit on Jupiter.
The OAFs home page has the following information (extracted from the
calendar, I guess):
The double shadow portion of the event(21:48 to 21:58) will be a
challenging observation since Jupiter will only be 13 degrees up.
19:25 Europa's shadow appear
21:48 Ganymede's shadow appears
21:58 Europa's shadow dissapears
23:17 Jupiter Sets
If you have acess or can get access to a low western view, you might
want to try for it. See the OAFs home page, under Tuesday April 3rd,
for other interesting details about this double transit.
Good Luck!
Photon Man
