Remove Timeago from entries

Hi!

I want to remove the human time difference showing in entries, and replace them with hours and minutes. What I’m trying to do is to get the time of when the entry is published showing where the “timeago” is now, and then the date beneath it.

I see people have asked about similar issues before, without getting a proper answer, but if someone could point me in the right direction here, as to what files to edit, and where, it would be very helpful.

Thanks!