20

With the zero gone the day is 2, and that invites a comparison with the 11th. Walton argued, about a total from a full name, that a 2 reached through 20 is a weak one and a 2 reached through 11 is strong. Applying that remark to a birth date is a stretch, though it shows how much older writers cared about the route to a digit.

Sepharial's list gives the whole figure wisdom, rigor and melancholy, drawn up for names and not for dates. Westcott passes on a detail from old Sanskrit, where the word for nails could stand for twenty, the fingers and toes together. Clement places this date among the Twos and writes D minor beside it.