I'd like to reopen this question:
The answer was a plugin called Nice Time
But This plugin is depricated and the creator stats that this functionality is acheivable via the date_modify filter.
Yes okay, but how?
I have a event archive where I want to show "This event happend xy days ago".
There is a time_diff filter in twig. But it seems as if this is not activated in craft.
.secondsdoes nothing? – KSPR Mar 14 '16 at 14:07.days, use.format, and then use one of the format chars listed here. So for example to get months use.format('%m'). – Steve Holland Mar 14 '16 at 14:18