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:
| Result | Date | Race | Venue | Group | Distance | Weight (kg) | Jockey | Winner/2nd |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Won | 29 Dec 2004 | 3yo Hcp Restricted Maiden | Pinjarra | NA | 1200 m | 55 | K. Forrester | 2nd - Hello Doctor |
| 2nd | 26 Jan 2005 | 3yo Hcp Restricted Fillies | Belmont | NA | 1200 m | 52.5 | K. Forrester | 1st - Lust For Dust |
| Won | 12 Feb 2005 | 3yo Hcp Restricted | Belmont | NA | 1200 m | 52 | K. Forrester | 2nd - Key's Ace |
| Won | 27 Feb 2005 | 3yo Hcp Restricted Fillies & Mares | Pinjarra | NA | 1400 m | 53.5 | K. Forrester | 2nd - Blondelle |
| Won | 25 Apr 2005 | 3yo Hcp Restricted Fillies | Belmont | NA | 1000 m | 59 | K. Forrester | 2nd - Final Effect |
| Won | 14 May 2005 | 3yo Hcp Restricted | Belmont | NA | 1200 m | 52.5 | K. Forrester | 2nd - Zed Power |
| Won | 28 May 2005 | 3yo Hcp Restricted Fillies & Mares | Belmont | NA | 1200 m | 55.5 | K. Forrester | 2nd - Eroded |
Question:
When did the 55 kg participant race?
Answer:
29 Dec 2004