The Time ago template calculates the amount of time which has passed since a provided timestamp. The result is a string similar to one of the examples below. This template should not be used with "subst" unless you don't want the stamp to change as the user refreshes the page.
Note that due to Wikipedia's caching mechanisms, you may need to purge a page using this template to update the dynamic value.
The result is rounded down. "Month" is defined as 31 days.