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Egyptian days

Egyptian days

Medieval calendar days believed to bring bad luck for new ventures and medical procedures

Historical

Photo: Unknown Unknown (Paris scriptorium), Public domain, via Wikimedia Commons

During the Middle Ages in Europe, Egyptian days were specific dates considered unlucky. Physicians avoided bloodletting on these days, and people generally refrained from starting new enterprises.

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  • Latin: dies Ægyptiaci
  • Unlucky for new enterprises
  • Physicians avoided bloodletting
  • Two dates per month
  • Medieval European belief

What it is

The Egyptian days were a set of dates in the medieval European calendar marked as inauspicious. The term derives from the Latin dies Ægyptiaci. These specific days were viewed as times when beginning any new undertaking was likely to fail or bring misfortune. The belief structured daily life by creating periods of caution where action was discouraged.

Where it comes from

The concept originated in Egypt but spread to Europe during the Middle Ages. Historical accounts from the ninth century document the practice. Scholars have examined how these days were integrated into medieval timekeeping and medical advice. The tradition persisted through various written records and calendars across Europe.

How it is done

People identified the unlucky dates using their calendar. On these days, they avoided starting new projects or businesses. Medical practitioners specifically refrained from performing bloodletting. The method was one of avoidance rather than active ritual. It relied on knowing the date and choosing not to act.

Tools and materials

No physical tools were used. The practice depended entirely on the calendar and knowledge of which days were designated as unlucky. The list of dates was fixed and repeated annually. Awareness of the calendar was the only requirement.

Egyptian days, drawn and placed

Emblem With the moon shape. Drawn from this page, not a photograph.
  1. Living
  2. Revived
  3. Fading
  4. Historical
  5. Legendary
  6. Performed
Standing: Historical Documented in the past; no continuous living tradition today. This says whether people still do it, not whether it works.
A crescent moon and a star: the sky as a calendar and a sign, used for lunar rites, fasting months, omens and night-time practice.

What it is for

The purpose was to avoid bad luck. People believed that acting on these days would lead to failure. Physicians sought to prevent harm to patients by avoiding bloodletting on these specific dates. It was a way to navigate uncertainty by adhering to traditional warnings.

Who does it

The general public followed these guidelines. Physicians were particularly advised to observe the restrictions. Knowledge of the days was part of scholarly and medical education. Anyone with access to a calendar could participate in the avoidance.

Peoples and places

The belief was held in Europe during the Middle Ages. The name references Egypt, indicating its origin there. The practice was widespread enough to be recorded in multiple historical texts. It reflects a common medieval concern with auspicious timing.

At a glance: who, where and when

What people believe

The underlying belief was that certain days carried inherent negative energy or fate. Starting work on these days was thought to invite disaster. This view of time as having moral or practical qualities was common in medieval thought. It treated days as entities that could influence outcomes.

When it is done

The days occurred throughout the year. They included specific dates in every month. For example, January 1 and 25 were included. February had the 4th and 26th. March featured the 1st and 28th. April had the 10th and 20th. May included the 3rd and 25th. June had the 10th and 16th. July featured the 13th and 22nd. August had the 1st and 30th. September included the 3rd and 21st. October had the 3rd and 22nd. November featured the 5th and 28th. December had the 7th and 22nd.

How scholars and sceptics see it

Historians study these days to understand medieval attitudes toward time and health. Researchers analyze texts like those from the ninth century. Scholars note the connection between medical practice and superstition. The persistence of the belief shows its importance in daily life.

Cautions and what is closed

There are no known dangers associated with the belief itself. It was a passive practice of avoidance. No rituals were performed that could cause harm. The main risk was missing opportunities due to excessive caution.

Compare and confuse

The Egyptian days are similar to other unlucky day traditions. Tycho Brahe days were another set of inauspicious dates. Both systems aimed to guide behavior through calendar warnings. They reflect a broader human tendency to find patterns in time.

Questions people ask about Egyptian days

What are Egyptian days?

They are specific dates in the medieval European calendar considered unlucky. People avoided starting new projects or undergoing medical procedures like bloodletting on these days.

Where do Egyptian days come from?

The concept originated in Egypt. It spread to Europe during the Middle Ages, where it became part of folk belief and medical advice.

Which months include Egyptian days?

Every month has two Egyptian days. Examples include January 1 and 25, February 4 and 26, and March 1 and 28.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Egyptian days", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryJaadu rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. Names and customs differ from one community to the next, and some knowledge is closed to outsiders and left out here. This page describes belief and practice. It does not say that any of it works, it is not a how-to, and it is not medical advice. If something is wrong, tell us. Last refreshed 2026-10-07.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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