Start vim with a datestamped filename?

Hi,

vim -c "silent edit filename.txt" starts vim with an unsaved file named filename.txt...

I'd like to have the filename dynamically datestamped (yyyyMMdd_hhmmss), ie: filename-20170312_165737.txt

Does anyone know how this could be accomplished as part of the invocation using vim commands? This needs to be crossplatform and not rely on OS-provided functionality.

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