Similar to how we show dates now with comments, let's show the relative date only for recent posts. Posts older than a month should show the exact date.
Bonus: improve the tool-tip date / time output. Currently it's difficult to read: 2017-09- 09T14:47:29-07:00. We could improve that to be something more readable, like: 2017-09-09 at 14:47.
Go to Blog Posts for a site, and view the post card to see the post's publish date.
To see the actual date and not elapsed time, for posts older than 1 month.

Proposed in an internal Slack chat by Bob, Megs, Andy P — ref: p1507740672000430-slack-triton
CC @mattsherman @shaunandrews
This is already addressed in the upcoming condensed post list redesign.
We used a cutoff of one week for switching to actual dates.
See: https://github.com/Automattic/wp-calypso/tree/master/client/blocks/post-time
You can see this in action currently in production for CPTs.
I’ll create a backlog item to address the tooltip formatting.
Also related: https://github.com/Automattic/wp-calypso/issues/12052
Closing this issue as it was addressed back in October. Related issues are still open and will be addressed separately.
Most helpful comment
This is already addressed in the upcoming condensed post list redesign.
We used a cutoff of one week for switching to actual dates.
See: https://github.com/Automattic/wp-calypso/tree/master/client/blocks/post-time