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 | Opponent | Score | Location | Record |
| --- | --- | --- | --- | --- | --- |
| 15.0 | Sat. Dec. 1 | @ Philadelphia 76ers | 110-116 | The Spectrum | 12-3 |
| 16.0 | Mon. Dec. 3 | Seattle SuperSonics | 135-102 | Boston Garden | 13-3 |
| 17.0 | Wed. Dec. 5 | Denver Nuggets | 148-140 | Boston Garden | 14-3 |
| 18.0 | Fri. Dec. 7 | @ Dallas Mavericks | 112-104 | Reunion Arena | 15-3 |
| 19.0 | Sat. Dec. 8 | @ San Antonio Spurs | 96-102 | HemisFair Arena | 15-4 |
| 20.0 | Mon. Dec. 10 | @ Houston Rockets | 107-95 | The Summit | 16-4 |
| 21.0 | Wed. Dec. 12 | Milwaukee Bucks | 129-111 | Boston Garden | 17-4 |
| 22.0 | Fri. Dec. 14 | Detroit Pistons | 108-100 | Boston Garden | 18-4 |
| 23.0 | Sat. Dec. 15 | @ Miami Heat | 114-100 | Miami Arena | 19-4 |
| 24.0 | Wed. Dec. 19 | Philadelphia 76ers | 115-105 | Boston Garden | 20-4 |
| 25.0 | Thu. Dec. 20 | @ Charlotte Hornets | 115-96 | Charlotte Coliseum | 21-4 |
| 26.0 | Sun. Dec. 23 | Atlanta Hawks | 132-104 | Boston Garden | 22-4 |
| 27.0 | Wed. Dec. 26 | Indiana Pacers | 152-132 | Boston Garden | 23-4 |
| 28.0 | Fri. Dec. 28 | @ Atlanta Hawks | 114-131 | The Omni | 23-5 |
Question:
On what date did they play in Boston Garden with a record of 22-4?
Answer:
Sun. Dec. 23