Dual Shadow Transits - Dec 20

During the evening of 2009 DEC 20 Galilean satellite Io for awhile will be transiting Jupiter concurrently with its shadow and that of Callisto. Below is my calculated timetable. I’ve created two graphics related to these events. They can be seen at: http://www.curtrenz.com/astronomical

Galilean Satellite Events
2009 DEC 20 CST (UT-6)

17:43:25 CST – Partial Transit by Io Begins
17:46:59 CST – Total Transit by Io Begins
18:50:40 CST – Partial Transit by Io’s Shadow Begins
18:52:44 CST – Total Transit by Io’s Shadow Begins
19:26:57 CST – Partial Transit by Callisto’s Shadow Begins
19:37:59 CST – Total Transit by Callisto’s Shadow Begins
20:01:20 CST – Total Transit by Io Ends
20:04:54 CST – Partial Transit by Io Ends
21:02:58 CST – Total Transit by Io’s Shadow Ends
21:07:39 CST – Partial Transit by Io’s Shadow Ends
23:35:29 CST – Total Transit by Callisto’s Shadow Ends
23:50:03 CST – Partial Transit by Callisto’s Shadow Ends

Photos, descriptions and timings of these events would be welcome additions to this thread.