Did Ancient Greece Have Weeks?

In Ancient Greece, the concept of weeks as we know them today did not exist. The ancient Greeks did not divide their time into seven-day cycles like we do in modern times. Instead, they had different methods of measuring time that were deeply rooted in their religious and cultural beliefs.

Ancient Greek Calendars

The ancient Greeks used various calendars to keep track of time. The most well-known calendar was the Attic calendar, which was primarily used in Athens.

This calendar was lunar-based and followed the cycles of the moon. It consisted of twelve lunar months, with each month starting from the first appearance of a new moon.

However, the Attic calendar did not have a fixed number of days within each month. Instead, it alternated between 29 and 30 days to align with the lunar cycle. This meant that each month could vary in length.

Festivals and Religious Observances

Religion played a significant role in ancient Greek society, and many aspects of their calendars were influenced by religious festivals and observances. These festivals often occurred at specific intervals throughout the year and were based on agricultural cycles or mythical events.

One example is the Panathenaic festival held in Athens every four years to honor the goddess Athena. This grand celebration lasted several days but did not follow a weekly pattern like our modern calendars do.

The Eight-Day Cycle

While Ancient Greece did not have weeks, they did have an eight-day cycle known as “nundinai.” This cycle was primarily used for market days and legal matters rather than for measuring longer periods of time like weeks.

The nundinai cycle was derived from Roman influence rather than being native to Greek culture. It divided each month into groups of eight days, with the eighth day being considered a market day. This cycle allowed for regular market activities and legal proceedings to take place on specific days throughout the month.


In summary, Ancient Greece did not have a concept of weeks like we do today. Their calendars were primarily lunar-based and focused on religious festivals and observances. While they did have an eight-day cycle for market days and legal matters, it was not used as a weekly measurement of time.

Understanding the different ways ancient civilizations measured time helps us appreciate the diversity of human culture and reminds us that our modern concepts are not universal throughout history.