The oldest sky calendar on Earth — 36 decan stars, the Egyptian year, and a nightly journey through the hours.
How it works
The same short walkthrough shown the first time you open the app:
Duat — The Account Is Open — The ancient Egyptian sky, kept live: the 36 decan stars that time the year, the 12 hours of the sun's night journey, Sirius and the Nile calendar — computed for where you stand.
The Weighing of the Heart — Egypt pictured a life as an account weighed against the feather of Ma'at — truth, balance, right measure. This app rehearses that weighing daily instead of waiting for the end — what you do today, examined now.
A Daily Practice, Hidden in a Story — Each decan carries a presiding deity and a quality, and brings one short, ordinary scenario: read today's decan and hour, live the scenario and make three choices, and watch your five-deity star grow.
Ask Thoth — Ask the Divine Scribe about a decan, an hour of the night, your birth star, or the tradition itself — today's sky and your birth details are already in view. Plain language, any time.
Watch Your Light Grow — Your choices quietly gather into five planetary deities — Ra's radiance, Thoth's wisdom, Hathor's joy, Sekhmet's courage, Osiris's renewal. These sun/Mercury/Venus/Mars/Saturn pairings come from the later Hellenistic-Egyptian sky, not pharaonic Egypt. No scores to chase: a light that grows over a lifetime of practice.
Add Your Birth Details — Your birth date finds the decan that was rising over Egypt — your natal star and its deity — and colours every reading with it. Optional, and everything stays on your device.
Getting started
Open the Today tab — see where today falls in the Egyptian calendar (season, month, day) and which decan star presides.
Take the daily practice — a short scenario carrying the presiding decan's quality. Answer naturally.
Enter your birth date in Settings to discover your birth decan — the star that was rising when your Egyptian-calendar birthday falls.
Follow the night sky and your Growth profile as your responses accumulate.
The tradition behind it
Millennia before the zodiac, Egyptian astronomers divided the sky into 36 decans — stars whose risings marked the hours of the night and the weeks of the year. Their calendar ran three seasons of four months, plus five epagomenal days, the birthdays of the gods. In the Amduat, the sun's nightly passage through the twelve hours of the Duat became a map of renewal: descent, trial, and return at dawn.
The app computes the Egyptian date and the presiding decan from real astronomy, on your device, and shapes each day's practice around it.
What's inside
Egyptian calendar
Today translated into the civil calendar of the pharaohs — season, month, day, and the five "days upon the year".
36 decans
The full decanal belt, each star-group with its character and its week of the year.
Birth decan
Your natal star from your birth date — the quality the tradition assigns to those born under it.
Ask & Growth
Question the tradition, and watch a behavioural profile build from your daily choices.
Morning guidance
Optional morning notifications name the presiding decan and its quality — composed on your device, opt-in, off any time in Settings.
Subscription
Duat offers a free trial period, after which a low-cost subscription unlocks full personalised access. Exact pricing and any current offers are shown in the app at the point of purchase, and via your device's app store account settings.
Privacy
Your birth date stays on your device; only the prompt for your reading is sent to our server, with no account or identifier attached. Read the full privacy policy.
Common questions
What is the Duat?
In Egyptian cosmology, the Duat is the realm the sun crosses each night — twelve hours of darkness before rebirth at dawn. The app borrows it as a frame for daily renewal: each day closes, is examined, and begins again.
Why five "extra" days?
The civil year was 360 days — twelve months of thirty. The five epagomenal days added at the end belonged to no month; tradition made them the birthdays of Osiris, Horus, Set, Isis, and Nephthys. The app marks them.
Does it work offline?
The calendar and decans are computed on the device. The daily scenario and Ask need a connection to our generation service.