Uing URL in JSON fetch

The URL posted for Hebrew to Gregorian (item 3 on the page) is shown as the HREF of an A tag in HTML.  When clicked, a new page opens with the JSON data of the Converter including Gregorian date and other info.  I am trying to use that same URL in a JavaScript FETCH  and when I execute,  it does not look like that the correct data is being returned, but rather a default perhaps that is returning the current date.   I am using ASYNC/AWAIT on the retrieval and the script has the code fetch (url)  where url is the string that works in the HREF.