Autumn equinox landscape illustrating the modern history of Mabon

Why Is the Autumn Equinox Called Mabon? The Modern History of the Name

Understand how Mabon became a modern Pagan name for the autumn equinox and why it should not be presented as an ancient universal Celtic festival.

Mabon is a modern Pagan name applied to the autumn equinox during the development of the contemporary eight-festival Wheel of the Year. The name draws on Mabon ap Modron from Welsh literature, but the medieval figure was not originally the god of an ancient equinox festival.

Read the complete Mabon pillar guide or open the interactive Wheel of the Year.

The equinox before the name

Autumn harvest customs are old and culturally diverse, while early modern Wiccan calendars could simply call this point the autumn equinox.

Mabon ap Modron

Mabon is a genuine figure in Welsh literature. Connecting his name directly to a historical equinox festival is a modern interpretive choice.

Living tradition and honest history

A modern origin does not make a festival meaningless. It makes the history of creativity, publication, and community adoption part of the story.

How to describe Mabon accurately

Call it a modern Pagan autumn-equinox festival informed by astronomical change, harvest traditions, and contemporary ritual.

What this means for modern practice

Use historical labels carefully, adapt observance to your local season and ability, and distinguish documented custom from reconstruction or personal ritual. This creates a practice that is both meaningful and transparent.

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Sources and further reading

FAQ

No. Harvest traditions are ancient and Mabon ap Modron is a genuine Welsh literary figure, but using Mabon as the name of the autumn-equinox festival became common in modern Paganism.

Mabon is usually observed around September 20–24 in the Northern Hemisphere. In the Southern Hemisphere, the corresponding autumn season occurs around the March equinox.

Mabon is a modern Pagan name for an autumn-equinox celebration centered on harvest, gratitude, balance, reciprocity, and preparation for the darker part of the year.

Mabon ap Modron is a figure in medieval Welsh literature whose name means “divine son of the divine mother.” His genuine mythology should be distinguished from the modern naming of the equinox festival.

The name Mabon was adopted for the autumn-equinox festival within twentieth-century modern Paganism. It draws on Mabon ap Modron from Welsh literature, not on a documented ancient equinox feast bearing that name.

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