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:
| Series no. | Title | Directed by | Written by | Original air date | Production Code |
| --- | --- | --- | --- | --- | --- |
| 1.0 | "Bully and the Beast" | Tyler Perry | Kellie R. Griffin | June6,2007 | 101.0 |
| 2.0 | "I Can Cry If I Want To" | Tyler Perry | Michelle L. Johnson | June6,2007 | 102.0 |
| 3.0 | "More Than Meets the Eye" | Tyler Perry | Christopher J. Moore | June13,2007 | 103.0 |
| 4.0 | "Busted" | Tyler Perry | Jenee V. Giles | June13,2007 | 104.0 |
| 5.0 | "Lost and Found" | Tyler Perry | Carmelita Arroyo | June20,2007 | 105.0 |
| 6.0 | "Down and Outted" | Tyler Perry | Christopher J. Moore | June20,2007 | 106.0 |
| 7.0 | "No Money, Mo' Problems" | Tyler Perry | Anita M. Cal | June27,2007 | 107.0 |
| 8.0 | "Just Say No" | Tyler Perry | Steve Coulter & Dee Wagner | June27,2007 | 108.0 |
| 9.0 | "Surprise, Surprise" | Tyler Perry | Shontell McClain | July4,2007 | 109.0 |
| 10.0 | "Father Knows Best" | Tyler Perry | Joseph Hampton | July4,2007 | 110.0 |
| 11.0 | "I Keep Coming Up Short" | Tyler Perry | Teri Jackson | July11,2007 | 111.0 |
| 12.0 | "The Buck Stops Here" | Tyler Perry | Carmelita Arroyo | July11,2007 | 112.0 |
| 13.0 | "Wax On, Wax Off" | Tyler Perry | Anita M. Cal | July18,2007 | 113.0 |
| 14.0 | "Head of the Class" | Tyler Perry | Steve Coulter & Dee Wagner | July18,2007 | 114.0 |
| 15.0 | "Paternity and Fraternity: Part 1" | Tyler Perry | Kellie R. Griffin | July25,2007 | 115.0 |
| 16.0 | "Paternity and Fraternity: Part 2" | Tyler Perry | Kellie R. Griffin | July25,2007 | 116.0 |
| 17.0 | "Cracking Under Pressure" | Tyler Perry | Lamont Ferrell | August1,2007 | 117.0 |
| 18.0 | "Club PCP" | Tyler Perry | Kellie R. Griffin | August1,2007 | 118.0 |
| 19.0 | "Sadly Mistaken" | Tyler Perry | Teri Jackson | August8,2007 | 119.0 |
| 20.0 | "And Justice for All" | Tyler Perry | Lamont Ferrell | August8,2007 | 120.0 |
| 21.0 | "I Got the Hook Up" | Tyler Perry | Teri Jackson | August15,2007 | 121.0 |
| 22.0 | "Absolutely Positive" | Tyler Perry | Joseph Hampton | August15,2007 | 122.0 |
| 23.0 | "Teacher's Pet" | Tyler Perry | Anita M. Cal | August22,2007 | 123.0 |
| 24.0 | "The Perfect Storm" | Tyler Perry | Christopher J. Moore | August22,2007 | 124.0 |
| 25.0 | "Sad, Sad Leroy Brown: Part 1" | Tyler Perry | Steve Coulter & Dee Wagner | August29,2007 | 125.0 |
| 26.0 | "Sad, Sad Leroy Brown: Part 2" | Tyler Perry | Kellie R. Griffin | August29,2007 | 126.0 |
| 27.0 | "Weeping May Endure for a Night" | Tyler Perry | Kellie R. Griffin & Joseph Hampton | September5,2007 | 127.0 |
| 28.0 | "The Big Test" | Tyler Perry | Steve Coulter & Dee Wagner | September5,2007 | 128.0 |
| 29.0 | "Balancing Act" | Tyler Perry | Kellie R. Griffin | September12,2007 | 129.0 |
| 30.0 | "Why Can't We Be Friends" | Tyler Perry | Steve Coulter & Dee Wagner | September12,2007 | 130.0 |
| 31.0 | "Dog Day Afternoon" | Tyler Perry | Christopher J. Moore | September19,2007 | 131.0 |
| 32.0 | "New Beginnings" | Tyler Perry | Kellie R. Griffin | September19,2007 | 132.0 |
| 33.0 | "Heavy Petting" | Tyler Perry | Carmelita Arroyo | September19,2007 | 133.0 |
| 34.0 | "The Fast and the Furious" | Tyler Perry | Michelle L. Johnson | September19,2007 | 134.0 |
| 35.0 | "Gone in 60 Seconds" | Tyler Perry | Teri Jackson | September26,2007 | 135.0 |
| 36.0 | "Lost Without U" | Tyler Perry | Carmelita Arroyo | September26,2007 | 136.0 |
Question:
What was the airdate of 21 series number?
Answer:
August15,2007