"listing date" of entry/media on IMDB (not the "release date")

Thank you for reply! if u r referring about id in the URL .. i did try that a while back but it seemed not working ... for example ... 

https://www.imdb.com/title/tt11468140/ Release date: December 20, 2019

https://www.imdb.com/title/tt11468142/ Release date: NONE (though its parent page has Release date: September 22, 2014

https://www.imdb.com/title/tt11468144/ Release date: December 13, 2024

So if u see the URLs have sequential/symmetrical ID but dates jumping around by half decade.  

(tt11468141 and tt11468143 URL ids are not unoccupied by IMDB and bring blank pages.)

If i have overlooked something, say there is some conversion involved (maybe base64 etc) please do guide me.

Thank you!

@mi1400​ 

The titles were probably added at the same time several years ago, and the 2024 release date was added later.