Decan names and forms from your corrected table. Hours of the night from the Amduat of Papyrus Leiden T. 71. The fourteen of the waxing moon from Dendera, Outer Hypostyle Hall. Feast days from the Edfu chronokrator list and the Dendera Khoiak texts.

The Sothic year begins on the morning Sirius returns, computed for your own latitude: the star two degrees or more above the horizon at the moment the sun reaches nine and a half degrees below it. Years are numbered from 139 CE, when the civil New Year and the rising last coincided. The Alexandrian year is anchored to 29 August 284 CE Julian and is the year the Coptic calendar still keeps. The wandering year is the ancestral 365-day form, anchored to the same 139 CE coincidence and drifting a day every four years since.

The lunar month begins at psedjentyu, the morning the old crescent can no longer be seen, tested with Yallop's criterion. Positions from Meeus.