Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
The Very Best of Enya
Table title:
Release history
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Country </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Format </th><th colspan=1 rowspan=1 > Label </th></tr>
<tr> <th colspan=1 rowspan=1 > Worldwide </th><td class="highlighted"  colspan=1 rowspan=1 > 23 November 2009 </td><td colspan=1 rowspan=2 > CD digital download </td><td class="highlighted"  colspan=1 rowspan=1 > Warner Music </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > United States </th><td class="highlighted"  colspan=1 rowspan=1 > 1 December 2009 </td><td class="highlighted"  colspan=1 rowspan=1 > Reprise </td></tr>
<tr> <th colspan=1 rowspan=1 > Worldwide </th><td colspan=1 rowspan=1 > 25 August 2017 </td><td colspan=1 rowspan=1 > LP </td><td colspan=1 rowspan=1 > Warner Music Reprise </td></tr>
</table>
Question:
When was The Very Best of Enya released in CD digital download worldwide and in the United States?
Answer:
The Very Best of Enya was released on 23 November, 2009, by Warner Music and on 1 December, 2009, by Reprise in the United States.