I think more people know how to define "3 days ago" when you tell them "provide it as an ISO 8601 time span" vs. "provide it in gits own format". When it comes

I think more people know how to define "3 days ago" when you tell them "provide it as an ISO 8601 time span" vs. "provide it in gits own format". When it comes to presenting it nicely, then sure, use 3 days ago. No problem with that.