I have added a SharePoint 2013 Content Query Web Part for displaying news items from a blog subsite, and would like to add a filter, so that, only "Publish Date" + 30 days will be displayed in the CQWP, for example, today is Dec 18, then a news item that was published prior to Nov 18 will be hidden. I need this to be dynamic. Please give me a clue on how to create the filter. thanks.
You cant use the published date field in the Content query web part. If you choose to use any other date fields, you can use the approach suggested by Deepmala