Accurate File Dates for Kiefer's Archives

Behold, actual data from this webserver:

{
    ...,

    "Lore LINE Texts II.txt": {
        "27519": {
            "secs": 1537073767.0,
            "text": "Sat Sep 15 23:56:07 2018"
        }
    },
    "Ludum Dare 2022: A Full Night's Sleep.md": {
        "9410": {
            "secs": 1674098146.0250206,
            "text": "Wed Jan 18 21:15:46 2023"
        }
    },
    "M m Breakdown.txt": {
        "2012": {
            "secs": 1480757704.0,
            "text": "Sat Dec  3 03:35:04 2016"
        }
    },
    ...
}

I have a lot of files ^(what?) and I like to know how old things are.

It's personally important to me that I keep archives, as I've been making things since I was little and have moved and duplicated stuff from machine to machine over the years.

There's two ways I do this. One is to index earliest files ages found by file name, which is what I do for my notes and articles, as those rarely change file names (and a renamed version is generally renamed for a reason, ie. it's distinct enough to warrant renaming).

For non-text file types or for larger and older archives where there are more cases where the same file has been used in multiple places with different names, I have an open source notebook I use which you can try out for yourself!