ke.se denotes the full moon, named as a day of return in Proverbs 7:20.

The attested use points to the full moon: Proverbs 7:20 explicitly presents it as the day on which a man will return home, while Psalm 81:4 contains the same masculine singular noun in a verse whose APB wording does not isolate its contribution.

1. The full-moon day · dominant

   In Proverbs 7:20, the masculine singular absolute form occurs in the clause concerning the day when a man will come to his house; the APB renders this as “for the day of the full moon he will come to his house.” Psalm 81:4 has the same morphology, though the APB renders the verse as a statute for Israel and does not make the noun's specific contribution clear.

   Proverbs 7:20Psalm 81:4

In the Anselm Project Bible: In Proverbs 7:20, the APB explicitly includes “the day of the full moon.” In Psalm 81:4, its translation does not visibly represent the noun, so the term's specific rendering cannot be isolated there.