Removing or Changing Post Date?

Hi,

Can anyone tell me how to remove or manually change the ‘Post Date’ from my events section as its confusing.

http://www.muzikevents.uk

http://screencast.com/t/FuWpO2pnj

http://screencast.com/t/SN2LSbbJCef

It shows the date of the post instead of the event date.

Im not very good with coding so your help is appreciated.