Should this be a view helper or action helper

I have an architec开发者_开发技巧tural question, no code. I'm trying to output time in the format 8 days ago, 7 days ago, etc. Should I process the original time in the action with an action helper or should I process it in the view with a view helper?

I would do it in a view helper. This would allow to use it in many views, and it would be easy to modify the format if needed.