Getting Category Dates to dynamically generate based on last blog post content in the categories folder?

[delize]

So I have been trying to figure this out for a while, but, can't unfortunately.

When having categories auto-populate, the contents of localhost:/blog/categories auto populates the date based on the last published:

Exactly like the demo site.

However, if you generate index.md files for the categories underneath like so: https://github.com/CaiJimmy/hugo-theme-stack/tree/master/exampleSite/content/categories/Test

The date and time is being generated as January 01, 0001:

Is there any way to get the date and time to generate based on the most recent post instead of the page of the categories/$categoryname/index.md contents?