My macro fetches data from a website. I want this macro to get the data
every 30 seconds.

So I've inserted a time delay. Here's the code.

Start = Timer ' Set start time.
Do While Timer < Start + 30
 DoEvents ' Yield to other processes.
Loop

After going through this piece of code, I want to get new data from the
website. So the macro should run automatically after every 30 seconds.
How can I achieve this?