> On Jul 4, 2024, at 12:36 PM, Ihor Radchenko <yantar92@posteo.net> wrote:
> 
> Have you seen `org-duration-from-minutes'?
> In Org mode, we have a rather complex (but flexible) system to customize
> the duration format:

I had not seen that function, thanks for pointing it out.  Looks useful and rather flexible.  Would you be able to re-use the example code I posted earlier to show how it formats various ages with typical configuration?

For activities (which is the package where the conversation about this need started), you can have ages from seconds to many years, so you need something that accommodates that dynamic range well.  magit--age was the inspiration, and we're in fact just reusing Jonas' configuration variable.