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:
| Rank | Rider | Sat 21 Aug | Mon 23 Aug | Tues 24 Aug | Wed 25 Aug | Thurs 26 Aug | Fri 27 Aug | Sat 28 Aug |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Michael Dunlop 997cc Suzuki XR69 | Untimed Practice | 24' 28.12 92.518mph | 21' 12.70 106.725mph | 19' 40.12 115.097mph | 19' 11.80 117.927mph | 18' 55.78 119.590mph | 22' 47.27 99.3435mph |
| 2.0 | Oliver Linsdell 746cc Yamaha FZ | Untimed Practice | —— No Time | 20' 34.41 110.035mph | 19' 41.82 114.931mph | —— No Time | —— No Time | —— No Time |
| 3.0 | Mark Buckley 997cc Suzuki XR69 | Untimed Practice | 24' 30.82 92.349mph | 20' 38.40 109.680mph | 20' 24.55 110.920mph | 20' 45.21 109.081mph | 20' 02.56 112.949mph | 22' 40.04 99.871mph |
| 4.0 | John Barton 749cc Suzuki GSX-R | Untimed Practice | —— No Time | 21' 18.05 106.278mph | 20' 59.91 107.808mph | 20' 56.01 108.143mph | 20' 35.96 109.897mph | —— No Time |
| 5.0 | Mick Godfrey 1000cc Suzuki GSX-R | Untimed Practice | 27' 09.87 83.337mph | 22' 07.70 102.303mph | 22' 20.01 101.363mph | 21' 13.75 106.636mph | —— No Time | 24' 07.75 93.820mph |
| 6.0 | Neil Vicars 750cc Suzuki GSX-R | Untimed Practice | 24' 39.44 91.811mph | —— No Time | 22' 35.91 100.175mph | 21' 58.65 103.005mph | 22' 23.97 101.065mph | —— No Time |
| 7.0 | David Taylor 1000cc Suzuki GS | Untimed Practice | 26' 04.68 86.809mph | 23' 39.23 95.706mph | 23' 02.31 98.262mph | 22' 03.33 98.189mph | 23' 06.12 97.992mph | —— No Time |
| 8.0 | Andy Lovett 750cc Suzuki | Untimed Practice | —— No Time | —— No Time | 23' 40.76 99.817mph | 22' 28.61 100.717mph | 22' 05.33 102.486mph | 25' 88.494 110.035mph |
| 9.0 | Geoff Martin 750cc Suzuki | Untimed Practice | —— No Time | 22' 43.21 99.639mph | 23' 23.80 96.758mph | 22' 05.58 102.467mph | 23' 33.97 96.061mph | 26' 01.51 86.985mph |
Question:
What was the Sat 21 Aug time for the rider whose Tues 24 Aug time was 20' 38.40 109.680mph?
Answer:
Untimed Practice