17

Adding 1 and 7 leads to 8, the number Walton linked to business and Cheasley to material competence. The unreduced figure has a far gloomier press. Westcott repeats Plutarch's account that Osiris was killed on the 17th of the moon, and adds that Egyptians abominated the number and that Pythagoreans called it obstruction, since it stands in the way between the square 16 and the oblong 18.

Sepharial's 1911 list, made for names, has misfortune, disregard and oblivion. Neither Westcott nor Sepharial applied this to anyone's birthday, so reading them here is a modern splice. Clement, who does work from the day of the month, simply files the 17th with the Eights and writes C sharp major beside it.