Gagan Deep Singh

Plugin handles the permalink changed due to changes in the post date when post date is used in the permalink structure. 
Tries to correct any malformed permalinks by trying to find the post in case of 404(File not found) header. 
It is just plug and play, activate it and it starts working, no configuration required.

Post Date Change Redirection

Saved us

Handles the changes in the permalink due to change in post date by providing 301 redirection

Charlie Cooper

JustNow converts the datetime across your website to a user friendly version. For example, ’15/08/21 21:16′ might get converted to ‘5 minutes ago’ or ‘4 weeks ago’ depending on the time and date a user loads the page.
Supported time formats
Just Now
Seconds Ago
Minutes Ago
Hours Ago
Days Ago
Weeks Ago
Years Ago
Coming Soon
Option to add prepend or append text
Option to add a Clock icon

Just Now – User Friendly Date Time

Instantly convert your blog time/date to Time Ago Format such as 1 week ago or 17 minutes ago.

Post Date Change Redirection vs Just Now – User Friendly Date Time