Format of the timestamps in darktable's sidecar files [explained]

Software darktable
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This is plain curiosity, combined with ignorance; darktable writes the export date and time into exported files as IFD0:ModifyDate, which is a really nice habit.

But in darktable’s XMP sidecars, there are three scary, 17-digit timestamps, that make Unix timestamps, if this is the right term, look like a childish joke.

2023 years is, allegedly, 63839713896 seconds. How are darktable’s stamps made?

Sorry for the noise and thank you in advance!

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dt XMP fields are binary blobs, i.e. not human readable. In this case, IIRC, it’s probably just a binary dump (or some other encoding of) of a tm struct.

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Thank you, Miloš, this is all I needed. Have a nice evening!

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