Dynamically subtracting CMS Date from Present Date

Does anyone know if it’s possible to set up a custom embed on a dynamic list, where the present month is subtracted from the Date/Time field of the CMS item?

For example, I enter a date (October 8, 2018) in the Date/Time field of the CMS item. Then a page displaying the dynamic CMS collection list displays the remaining months until that date?

I am familiar with HTML and CSS, but have a very limited knowledge of javascript. Any help is greatly appreciated.

Thanks.

Yes it should be possible. Can you show us what you have done?