Who started National Diane Day?

Nobody has claimed it. The day circulates on holiday-listing sites with no founder, sponsor, or launch record attached, and no source explains why January 26 was chosen.

What does the name Diane mean?

It is the French form of Diana, the Roman goddess of wild animals and the hunt. Etymologists trace the name to a root meaning to shine, and Britannica links it to the Latin words for sky and daylight.

National Diane Day

Next celebratedTuesday, January 26, 2027

Diane de Poitiers drank gold to stay young, and a 2008 dig at her tomb found deadly levels of it still in her hair. January 26 belongs to the 514,649 American women registered with the French form of the name she carried.

See how to celebrate

Countdown to the day

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Last updated September 6, 2026 · by the Holiday Calendar TeamHave an update or spot an error?

YEARLY DATEJanuary 26

OBSERVED INInternationally

CATEGORYNames

ORIGIN

Community Origin

FOUNDING ENTITY

Not documented

FIRST OBSERVED

Not documented

HOW THE HOLIDAY CAME TO BE

The listings carry it; the social trail is bare.

National Diane Day's only traceable footprint is circulation on holiday-listing sites, and a search of the social platforms found no dedicated posting behind it. No founder, organisation or establishing record has been located, and no source documents why it falls on January 26.

+ Know the story? Submit a founder Help us complete this holiday

INTRO

The Ides of August: a holiday that belonged to slaves

Long before National Diane Day existed, the name behind it already carried a holiday. In ancient Rome the goddess Diana's festival fell on the Ides of August, and it was a holiday for slaves. In her cult at Rome she counted as a protector of the lower classes, and of the enslaved above all.

The modern observance has no such record. Nobody has claimed authorship of it, and no source explains the date it sits on. What is documented is the name.

In 1950s America the French spelling beat the Latin one outright. Social Security's decade table puts Diane 17th among girls' names, against 55th for Diana.

ORIGINS

Diane Day history

INTRODUCTION

Diane is not the Roman spelling. The goddess was Diana, and the version that ended up on American birth certificates is the French one.

That detour is why a modern name day has an ancient cult sitting behind it. The goddess came first, and she was not quite the goddess most people picture.

CHAPTER 01

A grove, a lake, and a priest with a sword

Diana's most famous sanctuary was a grove above Lake Nemi at Aricia, a shrine shared by the cities of the Latin League. Rome's own temple to her stood on the Aventine and held the League's foundation charter.

The Aricia priesthood was the strange part. Strabo reported that the post went to a runaway slave who had killed the man who held it before him, and that the priest was always armed with a sword, watching for the next challenger.

CHAPTER 02

Anet, and a fountain of the goddess

Diane de Poitiers was born in 1499 and became the mistress of Henry II of France, who was twenty years her junior. Britannica records that she held court as queen of France in all but name, while the real queen, Catherine de Medicis, lived in comparative obscurity.

From 1547 she built a château at Anet under Philibert Delorme, the king's architect. One of its fountains carried a marble group of the goddess herself, now in the Louvre as La Diane d'Anet.

Her death became a medical paper. A dig in the Anet cemetery in 2008 reached skeletons near her monument, and examiners found deadly levels of gold in her hair. Drinkable gold was a court remedy, swallowed in the belief that it kept you young.

CHAPTER 03

The spelling that became American

The climb was fast. In the 1940s alone, 122,878 American girls were given the name.

The observance itself leaves nothing behind. No founder, sponsor, or establishing record for National Diane Day has been located.

The name is the part with a paper trail, and it runs from a Roman grove to a Paris museum to a federal register of births.

WHY THIS DAY MATTERS

Why National Diane Day Matters

HONORS

Diane Nash received the Presidential Medal of Freedom in 2022.

On July 7, 2022 Diane Nash received the Presidential Medal of Freedom, cited by the White House as a founding member of the Student Nonviolent Coordinating Committee who organized some of the most important civil rights campaigns of the 20th century. The same citation quotes Martin Luther King calling her the driving spirit in the nonviolent assault on segregation at lunch counters.

MYTH

Diana was not born a moon goddess

Britannica's editors state that there was probably no original connection between Diana and the moon, and that she absorbed that identity later from the Greek Artemis. The lunar imagery now attached to the name is a borrowing, not its starting point.

CALENDAR

The name already has an older feast day

Nominis, the name-day database of the Catholic Church in France, lists Diane for 10 June, a local feast for Blessed Diane d'Andalo, a Dominican at Bologna who died in 1236. The two dates are unrelated, and only the June one has an institution behind it.

BY THE NUMBERS

National Diane Day by the Numbers

514,649: US girls named Diane, 1926 to 2025
50th: Rank among US girls' names, 1926 to 2025
210,624: US girls named Diane, 1950s
22,198: US girls named Diane, 1930s

TIMELINE

Timeline

Goths sack the temple at Ephesus

The wonder listed in English under Diana's name is destroyed and never rebuilt.

Building begins at Anet

Philibert Delorme, architect to Henri II, starts the château whose fountain will hold a marble Diana.

Diane de Poitiers dies at Anet

She dies on 22 April at Anet, in the château that had been built for her.

The marble Diana reaches the Louvre

Seized during the Revolution, La Diane d'Anet is allocated to the museum and arrives on 5 April.

A journal names a cause of death

The forensic team publishes the case as one of chronic gold poisoning in the 16th century.

GET INVOLVED

How to Observe National Diane Day

Look up the name's older feast day

Nominis, run by the Catholic Church in France, is the reference the French actually use for name days. Its entry for Diane gives the etymology and the feast in a few lines.

READ

Read Strabo on the priest with the sword

The Greek geographer's account of the Arician sanctuary sits in Book 5 of his Geography. The passage is short, and it is quietly horrifying.

SEE

See the Anet marble at the Louvre

The group is on display in Salle 214 of the Richelieu wing, and the museum's catalogue record traces its whole route out of the château. The dogs and the stag are worth the detour on their own.

FIND

Find a Diane's decade in the federal tables

The Social Security Administration publishes the 200 most common American names for every decade, with the count beside each one. Look up the decade a Diane you know was born in and see where the name sat.

TELL

Tell a Diane where the name came from

The short version is a Roman goddess of wild animals and the hunt, by way of French spelling. Britannica's entry lays out the grove, the temples and the festival in a few paragraphs.

Test your knowledge

How well do you know National Diane Day?

1 / 6

In ancient Rome, Diana's festival on the Ides of August was a holiday for whom?

Answer

No. No statute, resolution, or proclamation naming it was located, so it is an unofficial observance and a normal working day.

COLOPHON

Sources

How we know what’s on this page. References, not endorsements.

15sources

9primary records

3independently dated

Primary records

Musée du Louvre

Diane appuyée sur un cerf (La Diane d'Anet), MR 1581

The museum's record for the marble Diana from a fountain at the château d'Anet.