Lucky and Unlucky Days

Definition

Lucky and unlucky days are an Egyptian system for judging whether a given day is favourable or adverse — Egypt's own form of day-quality reckoning, what scholars call hemerology. Each day of the 365-day civil year is rated good or bad, and many days are split so one part is favourable and another is not. The rating is justified by what the gods were held to have done on that calendar-day, and it carries practical advice: things to undertake, things to leave alone. The fullest surviving guide is the Cairo Calendar.

In Tradition

Scholars read this as a structured Egyptian way of judging the day: each date carries a quality and a reason, drawn from the mythic calendar of the gods. Scholars trace the broader habit of reading meaning into the sky back to the Ramesside period (c. 1300-1070 BCE), when omens were also drawn from Sirius at the new year — a related strand of divinatory culture, not the same system. The mythological framework is uniquely Egyptian; the function — picking favourable times — recurs across many traditions.

In Practice

In practice the system works like a lookup against the calendar rather than against a birth chart: you take the day in the civil year and read off its quality and the prescription attached to it. Because many days are divided, a single date can be favourable in the morning and adverse by evening, so the timing within the day matters. The reasoning is always mythic — a day on which the gods fought or mourned is a day to act carefully — which makes the system inseparable from Egyptian religion. It works the same ground as other electional traditions that choose good times to act, but on its own terms: the unit judged is the named calendar-day and its divine story, not a planetary configuration. The day-by-day verdicts of the Cairo Calendar are the fullest surviving body of this material; separate Sirius-based prognostics for the new year sit nearby in Egyptian divinatory culture, as their own practice rather than part of this system.

Historical Origin

The fullest surviving witness is Papyrus Cairo 86637, the Cairo Calendar, a Ramesside-period almanac edited by 'Abd al-Mohsen Bakir (1966) and discussed by Clagett, Ancient Egyptian Science Vol II (1995). Quack (in Brown, ed., The Interactions of Ancient Astral Science, 2018, p. 74) infers a developed Egyptian divinatory culture, including Sirius prognoses for the new year, as far back as the Ramesside period (c. 1300-1070 BCE).

Definition

In Tradition

In Practice

Historical Origin

Further Reading