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 Holographic Principle World Tour
Table title:
The Nordic Principle Tour
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > City </th><th colspan=1 rowspan=1 > Country </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Opening act </th></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 28 February 2017 </th><td class="highlighted"  colspan=1 rowspan=1 > Helsinki </td><td class="highlighted"  colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Tavastia Club </td><td colspan=1 rowspan=1 > Crimson Sun </td></tr>
<tr> <th colspan=1 rowspan=1 > 1 March 2017 </th><td colspan=1 rowspan=1 > Stockholm </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Debaser Strand </td><td colspan=1 rowspan=1 > Skálmöld </td></tr>
<tr> <th colspan=1 rowspan=1 > 3 March 2017 </th><td colspan=1 rowspan=1 > Copenhagen </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Amager Bio </td><td colspan=1 rowspan=1 > Skálmöld </td></tr>
<tr> <th colspan=1 rowspan=1 > 4 March 2017 </th><td colspan=1 rowspan=1 > Oslo </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Vulkan Arena </td><td colspan=1 rowspan=1 > Skálmöld </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 5 March 2017 </th><td class="highlighted"  colspan=1 rowspan=1 > Malmö </td><td class="highlighted"  colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > KB </td><td colspan=1 rowspan=1 > Skálmöld </td></tr>
</table>
Question:
When did the Nordic Principle Tour begin and end?
Answer:
The Nordic Principle Tour began on 28 February 2017 in Helsinki, Finland and concluded on 5 March 2017 in Malmö, Sweden.