Akhet (Inundation)

ah-KET

egyptian: Ꜣḫt

Definition

Akhet is the first season of the Egyptian civil calendar (Egyptian Ꜣḫt, "Inundation"). It runs four months — I to IV Akhet — laid out as 1 I Akhet through 30 IV Akhet, 120 days in all. In the fixed 365-day civil year that anchors Egyptian chronology, Akhet is the season of the Nile flood, and it was meant to fall in step with the heliacal rising of Sopdet (Sirius) — the star's first pre-dawn appearance — which Egyptian sources call the Opener of the Year (Wepet Renpet), set at I Akhet 1.

In Tradition

Egyptologists treat the three-season set Akhet, Peret, Shemu as the agricultural-administrative frame of the 365-day civil year, kept distinct from the parallel lunar-religious calendar. Belmonte and Lull, Clagett, and Parker all read Akhet as the flood-season of that frame — "meant to," because the leap-day-less civil year slips about one day every four years against the real Nile flood-cycle, so the alignment held perfectly only at the start of each Sothic cycle.

In Practice

When you read Egyptian astronomical texts, the Akhet season anchors the Sothic-rising attestations that drive Egyptian chronology: the key Sopdet-rising dates — Sesostris III Year 7 from El-Lahun, Censorinus in 139 CE — all point to I Akhet 1 as the canonical New-Year alignment. The Ramesside diagonal star-clock tables run their first eight tables across Akhet — Tables 1-8, covering I Akhet 1 through IIII Akhet 16 — which sets the season-opening hour-star sequence (Clagett, Doc III.14). For Egyptian-revival astrology, Akhet supplies the canonical opening-of-year frame.

Historical Origin

Akhet is attested through every period of Egyptian writing, from the Old Kingdom *Pyramid Texts* to the Ptolemaic-Roman astronomical papyri. Standard treatments: Clagett, *Ancient Egyptian Science* Vol II §III (1995); Belmonte & Lull, *In Search of Cosmic Order* (2009-2010), §§5.7 (Sothic dates) and 5.5 (calendar structure); Parker, *The Calendars of Ancient Egypt* (Chicago 1950). The Wepet Renpet feast at I Akhet 1 is attested from Old Kingdom feast-lists — the Mereruka tomb at Saqqara — onward.

Definition

In Tradition

In Practice

Historical Origin

Further Reading