Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Episode air date | Audition city | First audition date | Audition venue | Callback audition date | Callback venue | Golden tickets |
| --- | --- | --- | --- | --- | --- | --- |
| January 19, 2011 | East Rutherford, New Jersey | August 3, 2010 | Izod Center | September 28–30, 2010 | Liberty House Restaurant | 51 |
| January 20, 2011 | New Orleans, Louisiana | July 26, 2010 | New Orleans Arena | October 17–18, 2010 | Hilton Riverside Hotel | 37 |
| January 26, 2011 | Milwaukee, Wisconsin | July 21, 2010 | Bradley Center | October 2–3, 2010 | Milwaukee Art Museum | 53 |
| January 27, 2011 | Nashville, Tennessee | July 17, 2010 | Bridgestone Arena | October 25–26, 2010 | Ryman Auditorium | 56 1 |
| February 2, 2011 | Austin, Texas | August 11, 2010 | Frank Erwin Center | October 8–9, 2010 | Barton Creek Resort & Spa | 50 |
| February 3, 2011 | Los Angeles, California | September 22, 2010 | The Forum | November 3–4, 2010 | AT&T Center | 30 1 |
| February 9, 2011 | San Francisco, California | August 19, 2010 | AT&T Park | November 9–10, 2010 | Westin St. Francis | 47 1 |
Question:
When were the callback auditions at Hilton Riverside Hotel held?
Answer:
October 17–18, 2010