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 Number | Location | Original Airdate | Challenge Winner | Challenge |
| --- | --- | --- | --- | --- |
| 20.0 | Las Vegas , Nevada | August 12, 2009 | Food | 6-pound "Big Badass Burrito" |
| 21.0 | Charleston, South Carolina | August 19, 2009 | Man | Spicy tuna sushi |
| 22.0 | San Francisco, California | August 26, 2009 | Man | The Kitchen Sink (2 gallons of ice cream) |
| 23.0 | Durham, North Carolina | September 2, 2009 | Food* | The Doughman (food & sport triathlon) |
| 24.0 | Honolulu, Hawaii | September 9, 2009 | Food | Mac Daddy Pancake Challenge |
| 26.0 | Philadelphia, Pennsylvania | September 23, 2009 | Man | 5-pound "Ultimate Cheesesteak" |
| 28.0 | Springfield, Illinois | October 7, 2009 | Man | Firebrand chili |
| 33.0 | Brooklyn, New York | November 11, 2009 | Man | Suicide Six Wings Challenge (spicy wings) |
| 37.0 | New Brunswick, New Jersey | December 9, 2009 | Food | Fat Sandwich Challenge (five stuffed sandwiches) |
Question:
How many dates originally aired episodes located in Philadelphia, pennsylvania?
Answer:
1.0