Closet approach was Oct 9, 2008 19:06 UTC

[Thomascountz]

On page 187 of the PDF, the result of Dede's query shows the closest approach of Cassini to Enceladus was 2008-10-10 02:06:39 UTC.

However, the data in inms.csv and memos from ESA show that it was 2008-10-09 19:06:39 UTC.

enceladus=# select sclk, alt_t from import.inms where alt_t like '28.576%';
         sclk          | alt_t  
-----------------------+--------
 2008-283T19:06:39.707 | 28.576
 2008-283T19:06:39.741 | 28.576

https://www.esrl.noaa.gov/gmd/grad/neubrew/Calendar.jsp?view=DOY&year=2008&col=1

https://sci.esa.int/web/cassini-huygens/-/43525-enceladus-fly-by-09-10-08

On 9 October 2008 Cassini will fly closer to the surface of Enceladus and deeper through the south polar plume than ever before. The closest approach occurs at 19:06:40 UT...

[robconery]

Wow interesting. I'll dig into this! I could swear I used the INMS data to figure this...

[jjturner]

@robconery I believe the discrepancy is due to unnecessarily casting the nadir to UTC in the query. So it would be taking your California locale and adding 7 hours to produce the UTC equivalent. However, the INMS times are already in UTC as you verified previously in the book.