# from https://github.com/python/cpython/blob/5849af7a80166e9e82040e082f22772bd7cf3061/Lib/test/datetimetester.py#L3104-L3226
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2025-01-02T030405.678901
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2009-04-19T03:15:45.1234567
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20250102T03:04:05.6
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2026-W01-3T16:21:00.000000
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2022-W52-7T20:21:59.999999
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# https://github.com/python/cpython/blob/5849af7a80166e9e82040e082f22772bd7cf3061/Lib/test/datetimetester.py#L3237-L3261
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