XF 1.4 Add "Hours Ago" to forum list

Currently, when a forum topic is replied to, and the reply time is shown in the forum list, it seems to go...

"posted 59 minutes ago"


"Posted today at 9:30PM"

I'd love for this to go on to say "hours ago" up to a defined amount, as this makes the forum look more fresh of content, instead of just timestamped after an hour.

Is this possible?