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bug: date conversion, Python 3.14, Windows #890

Description

@NastyaKa

Bug Report

  • Operating system: Windows

  • Python version: 3.14.7

  • CPU architecture: AMD64

  • Test runner: pytest 7.4.4 via tox

  • Current behavior:

    The following test fails on Windows with Python 3.14:
    tests/aio/test_types.py::test_types_native[value5-Datetime64-result_value5]
    The test converts a Datetime64 value representing 1969-01-01, which corresponds to a negative Unix timestamp. The conversion calls datetime.utcfromtimestamp(-31536000) and raises:
    OSError: [Errno 22] Invalid argument

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