Holiday Calendar

National Cynthia Day

Next celebratedSunday, June 6, 2027

Cynthia began as a place, the rocky hill on Delos where Artemis was born, and her worshippers borrowed it as a nickname for the goddess. June 6 goes to the women who carry it, not to the December name day older calendars keep.

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Last updated September 6, 2026 · by the Holiday Calendar TeamHave an update or spot an error?
YEARLY DATEJune 6
OBSERVED INInternationally
CATEGORYNames
ORIGIN

Community Origin

FOUNDING ENTITY
Not documented
FIRST OBSERVED
Not documented
HOW THE HOLIDAY CAME TO BE

An ancient name, an unsigned modern holiday.

No documented founder, proclamation, or establishment record has been identified for National Cynthia Day. It circulates on holiday calendars and social media as a name-archetype observance fixed to June 6.

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

How a Roman poet's alias became a nursery favorite

National Cynthia Day honors everyone who carries a name that first entered the written record as a secret. Around 29 BCE the Roman poet Sextus Propertius published his first book of love poems and called it, simply, Cynthia, after the woman at its center. Cynthia was not her real name.

The 2nd-century writer Apuleius later reported that she was a woman named Hostia. Almost none of today's Cynthias would guess their name began as a poet's code word. That distance, from one man's private alias to millions of birth certificates, is the story worth telling.

One thing is worth pinning down first. This modern name-appreciation day falls on June 6, not the older, traditional Cynthia name day that some calendars mark in December.

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ORIGINS

Cynthia Day history

INTRODUCTION

Long before Rome, the name belonged to a goddess. In Greek myth, the huntress Artemis was born on Delos, a small island crowned by a rocky hill called Mount Cynthus. Her worshippers nicknamed her Cynthia, after that peak.

For a long time the word stayed divine. It named a goddess and a huntress, never an ordinary girl. Turning a sacred epithet into a name for a daughter would take centuries.

CHAPTER 01

From myth to the nursery

The Renaissance revived a hunger for the classical world, and long-buried names came back with it. Cynthia was one of them, more a poet's flourish than a christening choice. It stayed rare for generations, and did not become a common English name until the 1800s.

CHAPTER 02

An American favorite

America, in time, took the name to heart. Cynthia joined the country's Top 100 girls' names in 1945. It climbed through the postwar years into a mid-century staple, a name pinned to a whole cohort of daughters.

Then it slid back down the charts as fashions turned.

CHAPTER 03

A day without a paper trail

National Cynthia Day grew out of that lasting affection, but it arrived with no documents. No founder is on record, and no source explains why the date is June 6.

The observance lives instead on holiday calendars and in social feeds, where people mark it by tagging the Cynthias in their lives. Its story is the name's story, not a founder's.

BY THE NUMBERS

National Cynthia Day by the Numbers

#7
Cynthia's peak US rank, 1957
1956-1965
Cynthia's years in the US Top 10
113 m (371 ft)
Height of Mount Cynthus, Delos
#829
Cynthia's US rank by 2024

GOOD TO KNOW

Surprising facts about National Cynthia Day

Cynthia does not actually mean the moon

The literal sense is a woman from Mount Cynthus, a place, not a planet. The lunar meaning is borrowed from Artemis, and the Online Etymology Dictionary records Cynthia only as a poetic name of the Moon.

It was a secret name for Queen Elizabeth I

In Ben Jonson's 1600 satire Cynthia's Revels, staged by a company of boy actors, the moon goddess Cynthia stood in for the Virgin Queen. Court poets kept matching a chaste goddess to an unmarried monarch.

The name has a masculine twin

Artemis's brother Apollo carries the matching epithet Cynthius, the male form of the same name. The girl's name has a rarely used male counterpart.

Cindy is really Cynthia

The everyday short forms Cindy, Cyndi, and Cynth all trace back to the same classical name. A breezy nickname sits on top of a two-thousand-year-old word.

GOOD TO KNOW

Famous people named Cynthia

Cynthia Nixon

The actress who played Miranda Hobbes on Sex and the City.

Cynthia Erivo

An acclaimed actress and singer, and an Academy Award nominee.

Cynthia Lennon

The first wife of John Lennon, who lived from 1939 to 2015.

Cyndi Lauper

The pop singer whose first name is a short form of Cynthia.

Cynthia Rylant

The award-winning American author of children's and young-adult books.

WHY THIS DAY MATTERS

Why We Love National Cynthia Day

GENERATION

A first name that quietly gives away a generation.

Because the name spiked for one mid-century moment and then faded, it now works almost like a timestamp. Meet a Cynthia and the odds favor a birth year closer to the 1950s than the 2000s.

IDENTITY

It gives a shared name its own date

A birthday marks one person, but a name day marks a name. National Cynthia Day gives everyone who answers to Cynthia a single date to share.

REACH

It belongs to no single country

The day is observed internationally rather than in one nation. A Cynthia in London and a Cynthia in Los Angeles can claim the same date.

GET INVOLVED

How to Celebrate National Cynthia Day

EDITOR'S PICK

Reach out to a Cynthia you know

Send a call or a message to a friend, relative, or coworker named Cynthia. A note on her name's day is the simplest way to mark it.

LEARN

Learn the Greek myth behind the name

Read about the goddess Artemis and the island of Delos, where the name began. A few minutes with the name's history turns Cynthia into a piece of mythology.

COOK

Cook a Greek meal for the occasion

Make a simple Greek dinner to nod to the name's island roots. Lemon, oregano, and olive oil are an easy place to start.

FIND

Find a Cynthia in your family tree

Look back through family records for a Cynthia in an earlier generation. The name was a mid-century favorite, so many families have one to uncover.

SHARE

Share the name's story online

Post the history of the name and tag a Cynthia you know. The observance spreads mostly through these organic social posts.

Test your knowledge

How well do you know National Cynthia Day?

1 / 8

What does the name Cynthia literally mean?

Answer

The modern name-appreciation day is June 6. December 13 is the older, traditional Cynthia name day marked on some United States calendars, so the two are separate dates for the same name.

COLOPHON

Sources

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

9sources
0primary records
2independently dated
Behind the Name2026-05
Cynthia: meaning, origin and history
Traces Cynthia from a Greek epithet of Artemis to a modern given name.
View source
Behind the Name2024
Cynthia given-name popularity in the United States
Year-by-year US popularity ranks for Cynthia, drawn from Social Security data.
View source
Appellation Mountain
Baby Name of the Day: Cynthia
A name blog's profile of Cynthia's roots, revival, and US popularity arc.
View source
Encyclopaedia Britannica
Sextus Propertius
The Roman poet whose first book, Cynthia, was named for his mistress Hostia.
View source
Wikipedia
Cynthus
Mount Cynthus on Delos, a granite rise and the mythical birthplace of Artemis.
View source
Wikipedia
Cynthia's Revels
Ben Jonson's 1600 satire casting the goddess Cynthia as Queen Elizabeth I.
View source
Online Etymology Dictionary
Cynthia
Records Cynthia as a poetic name of the Moon, from the Cynthian goddess.
View source
namecalendar.net
Cynthia: Name Day, Name Meaning & More
Lists December 13 as the traditional Cynthia name day in the United States.
View source
Wikipedia
Cynthia Erivo
Biography of the acclaimed actress and singer named Cynthia.
View source
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