Fetch data from web data source multiple times with parameters from different cells

[vipett]

I get data from a webpage which unfortunately only shows data per day, but I need it per day on a monthly basis.
Each date consists of 4 columns Name, short name, value 1, value 2

I would like to have a sheet for January with every day in January side by side,
A1-D1 would be merged and say 2017-01-01
E1-H1 would be merge and say 2017-01-02
etc etc

Then other sheets from the following months.

I just want one sheet to update at a time in order to limit the stress on the server.

http://www.url.com/date= [date]

How do I do this?

Thanks