13

Clement gives this date a stand-alone remark, which is rare in that book: a 13 in birth is self-assertive and opinionated to the point of stubbornness, and cannot be restrained. For the sum the day counts as 4, because 1 and 3 add to 4. Clement's musical table sets F sharp major here, one half step above the F major of the 4th.

The bad name of thirteen comes with a date attached. Westcott says old Hebrew lore did not treat it as ill-omened and that the idea grew up centuries after the Last Supper, while the priests of Mexico counted in weeks of thirteen days. Sepharial's name list still says wickedness and wrong, so the old books stand on both sides of the superstition.