The issue here seems to be a discrepency between two different metadata encodings in each of these files. MediaInfo is an open source tool for viewing metadata inside video files, and below is a screenshot of the excellent Invisor app on Mac, which uses MediaInfo but allows you to load multiple files for easy comparison.
Take note of the "File > Created" and "Container > Encoded date" fields, highlighted in this screenshot for the three files in question:

The Created field is in an implied ti
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