published dates before feb 0101 CE
I have several books in my library which were published before February 101 CE, some of which were published in the BCE era. I want my metadata to be as accurate as possible. However, that doesn't possible with dates. 0101-01-01 seems mean 'no date' according to Calibre, and Calibre doesn't accept any dates before that, reverting it back to whatever the previous metadata claims. Is there a way to work around this?
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