[sharkdp]

> 365·243 ought to be 365·2425 exactly:

Yes. This is also how it is defined: https://github.com/sharkdp/numbat/blob/ba9e97b1fbf6353d24695...

The calculation above is showing a rounded result (6 significant digits by default).

[agalunar]

That's what I figured! but thought the derivation would be fun to share with people reading the comments.