Playlists Video Dates Issue

The published dates of videos for playlists are all wrong, even those videos that are years old say 3 months published and even one has 1 day published dates. Where really these same videos were published months or years ago.
This page is an example of this issue…
https://dailycdev.com/music/top-christian-christmas-music/

The page I need help with: [log in to see the link]