How to determine the DirectAdmin WordPress backup date? [migrated]

A while ago I had downloaded my website directory backup via DirectAdmin.

It downloaded a Zip file which does not directly contain the date from when this backup was. (Apparently its a hash to verify integrity by DirectAdmin, I find it stupid that they don’t include a date.)

I also downloaded it at a later date than the actual backup was taken so the date of the .zip file is not correct either.

I used this PowerShell script, to determine the latest file:

$latestFile = Get-ChildItem -Recurse -File |
              Sort-Object LastWriteTime -Descending |
              Select-Object -First 1

if ($latestFile) {
    Write-Output "Latest file: $($latestFile.FullName)"
    Write-Output "Modified at: $($latestFile.LastWriteTime)"
} else {
    Write-Output "No files found in the current directory."
}

However that did not work it indicates a date that I know is a couple hours before the backup date. But I need to know roughly the hour, not exactly but roughly, and this is not it.

Are there any WordPress specific .log files or plugin files that I can look through to find a date of when it stopped logging/backup was taken? I know that log files are often open for long times, so their modified date could be way earlier than the actual last appendation of text.

How can I determine the date that this backup file was from?