I need to pull data from a live website (www.dsebd.org) after every 30 minutes. I need the data regularly. I need only DSEX index data. I will be immensely grateful to you if you please help me in pulling data int the following table.

Date 11.00 11.30 12.00 12.30 1.00 1.30 2.30 Closing hour

With thanks,
Milton