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:
| Team | Outgoing manager | Manner of departure | Date of vacancy | Replaced by | Date of appointment | Position in table |
| --- | --- | --- | --- | --- | --- | --- |
| Aarhus GF | Erik Rasmussen | Sacked | 20 May 2010 | Peter Sørensen | 1 July 2010 | Pre-Season |
| Næstved BK | Kim Poulsen | Mutual consent | 30 June 2010 | Brian Flies | 1 July 2010 | Pre-Season |
| FC Roskilde | Martin Jungsgaard | End of contract | 30 June 2010 | Carsten Broe | 1 July 2010 | Pre-Season |
| Hobro IK | Søren Kusk | End of contract | 30 June 2010 | Jan Østergaard | 1 July 2010 | Pre-Season |
| AB | Flemming Christensen | End of contract | 30 June 2010 | Kasper Kurland | 1 July 2010 | Pre-Season |
| FC Fredericia | Peter Sørensen | Signed by Aarhus GF | 30 June 2010 | Thomas Thomasberg | 1 July 2010 | Pre-Season |
| FC Hjørring | Thomas Thomasberg | Signed by FC Fredericia | 30 June 2010 | Kim Poulsen | 1 July 2010 | Pre-Season |
| Hobro IK | Jan Østergaard | Sacked | 2 November 2010 | Jens Hammer Sørensen | 2 November 2010 | 11th |
| Viborg FF | Lars Søndergaard | Sacked | 24 November 2010 | Steffen Højer & Søren Frederiksen | 24 November 2010 | 13th |
| Hobro IK | Jens Hammer Sørensen | Mutual consent | 26 November 2010 | Jakob Michelsen | 8 January 2011 | 11th |
| Hvidovre IF | Kenneth Brylle Larsen | End of contract | 31 December 2010 | Per Nielsen | 1 January 2011 | 14th |
| Kolding FC | Jens Letort | End of contract | 31 December 2010 | Kim Fogh | 1 January 2011 | 10th |
| Vejle BK | Mats Gren | Sacked | 12 April 2011 | Viggo Jensen | 14 April 2011 | 3rd |
Question:
What was the vacancy date for Thomas Thomasberg?
Answer:
30 June 2010