If you go to Google on desktop or mobile and put in a site command and filter the results to only show search results within the past hour, Google will return no results. So for example, you search for [site:nytimes] and then filter for search results in the past hour under the search tools options, Google will return nothing.
Here is a screen shot:
Same thing on mobile:
If you add on a query to the end of the site command, then it works fine. It is a weird search bug, which probably only SEOs or webmasters would pick up on.
Danny Sullivan from Google is aware of the issue and has reported it last night:
Yes, I noted something similar like this yesterday when using date restriction and sorting. I'll be passing it on for review,
— Danny Sullivan (@dannysullivan) March 22, 2018
I see. Yeah, I'll pass that on.
— Danny Sullivan (@dannysullivan) March 22, 2018
Forum discussion at Twitter.