We used to have an Advanced search page that was better before changes were made to the custom support forum and site software. There is still a way to search for something in a set time period though the post dates can still be in random order of sorts especially second page on. For example with this search for Mozilla https://support.mozilla.org/en-US/search/?w=2&all_products=1&q=Mozilla+range%3Aquestion_updated%3Agte%3Anow-1d%2Fd In the search bar you can change the days from 1d to say 30d or 180d and select the support forum section on right to search in. Just change the word from Mozilla to whatever you want to search. Also since this question is more about https://support.mozilla.org/ itself the place to post is in the https://support.mozilla.org/en-US/forums/contributors/ section on https://support.mozilla.org/en-US/forums/

Thanks, James. I will use your Mozilla search suggestion (and try to post in the appropriate place too).