[issue31327] [doc] Add example of platform-specific support for negative timestamps to the time doc

[Vidhya]

Vidhya <vidhya.friend at gmail.com> added the comment:

[Entry level contributor seeking guidance]If this is not yet fixed, I can work on this. Please let me know.

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nosy: +vidhya

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31327>
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