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:
| Game | Date | Team | Score | High points | High rebounds | High assists | Location Attendance | Record |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 17.0 | December 2 | L.A. Clippers | W 100–98 (OT) | Dirk Nowitzki (29) | Dirk Nowitzki (10) | Jason Kidd (8) | American Airlines Center 19,670 | 9–8 |
| 18.0 | December 4 | Phoenix | W 112–97 (OT) | Dirk Nowitzki (39) | Erick Dampier (14) | Jason Kidd (8) | American Airlines Center 19,813 | 10–8 |
| 19.0 | December 6 | Atlanta | W 100–98 (OT) | Dirk Nowitzki (24) | Dirk Nowitzki , Erick Dampier (11) | Jason Kidd (8) | American Airlines Center 19,966 | 11–8 |
| 20.0 | December 9 | San Antonio | L 126–133 (2OT) | Dirk Nowitzki (35) | Dirk Nowitzki (10) | Jason Kidd (12) | American Airlines Center 19,937 | 11–9 |
| 21.0 | December 11 | Charlotte | W 95–90 (OT) | Jason Terry (26) | Dirk Nowitzki (13) | Jason Kidd (7) | American Airlines Center 19,736 | 12–9 |
| 22.0 | December 13 | Oklahoma City | W 103–99 (OT) | Dirk Nowitzki (46) | Brandon Bass (9) | Jason Kidd (7) | American Airlines Center 20,190 | 13–9 |
| 23.0 | December 15 | Denver | L 88–98 (OT) | Dirk Nowitzki (27) | Erick Dampier (15) | José Juan Barea (9) | American Airlines Center 19,969 | 13–10 |
| 24.0 | December 17 | @ Toronto | W 96–86 (OT) | Jason Terry , Dirk Nowitzki (27) | Dirk Nowitzki (10) | Jason Terry (8) | Air Canada Centre 18,832 | 14–10 |
| 25.0 | December 19 | @ New Jersey | L 97–121 (OT) | Dirk Nowitzki (24) | Erick Dampier (7) | Jason Kidd (7) | Izod Center 9,889 | 14–11 |
| 26.0 | December 21 | @ Washington | W 97–86 (OT) | Jason Terry (25) | James Singleton (13) | Jason Kidd (11) | Verizon Center 15,582 | 15–11 |
| 27.0 | December 23 | Memphis | W 100–82 (OT) | Dirk Nowitzki (21) | Erick Dampier (9) | Jason Kidd (11) | American Airlines Center 20,200 | 16–11 |
| 28.0 | December 25 | @ Portland | W 102–94 (OT) | Dirk Nowitzki (30) | Jason Kidd (12) | Jason Kidd (10) | Rose Garden 20,643 | 17–11 |
| 29.0 | December 26 | @ Utah | L 88–97 (OT) | Jason Terry (26) | Jason Kidd , Dirk Nowitzki , Erick Dampier (8) | Jason Kidd (9) | EnergySolutions Arena 19,911 | 17–12 |
| 30.0 | December 28 | @ L.A. Clippers | W 98–76 (OT) | Josh Howard (29) | Brandon Bass , Josh Howard , Erick Dampier (9) | Josh Howard (7) | Staples Center 16,685 | 18–12 |
Question:
What was the date of game 21?
Answer:
December 11