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Permalink Submitted by Anonymous (not verified) on 24 January, 2020

First of all this is great! Thank you.
Secondly:
Feels like the leap year offset is wrong on the practice page. It quotes an offset for 1983 as 0, where the table shows it should be 1, 4th even decade = 1. While the offset for 1965 is 1.
Am I missing something.

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