Holiday Calendar

National Diana Day

Next celebratedSaturday, July 31, 2027

Lady Diana Spencer married at St Paul's in 1981, and that year American parents registered 1,357 more daughters as Diana - the fourth-largest one-year jump in the whole federal record. July 31 is the name's own day.

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YEARLY DATEJuly 31
OBSERVED INInternationally
CATEGORYNames
ORIGIN

Community Origin

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

A very old name on a very new day.

National Diana Day reaches July 31 unattributed: no person, organisation or campaign is on record as having put it there. A Federal Register search for the exact phrase returns zero documents.

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INTRO

Rome's goddess of the hunt: her festival was a slaves' holiday

Diana was a Roman goddess of wild animals and the hunt, and Britannica records something unusual about her festival day: the Ides of August, kept at Rome and at Aricia, was a holiday for slaves. National Diana Day carries her name forward, and almost nothing else.

That is not one reference book's flourish. A nineteenth-century classical dictionary hosted by Perseus calls the date the dies servorum, the day of the slaves, and says it was kept every year by slaves of both sexes. It adds that no other festival of Diana is heard of from early Rome.

What survives is the name. This is a name day, unofficial and unsigned, kept for the women and girls who carry the spelling rather than for the goddess who supplied it.

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ORIGINS

Diana Day history

INTRODUCTION

Start with what the word means. Behind the Name glosses Diana as "divine, goddesslike", a derivative of the Latin dia or diva. The job that went with the name was more practical than the gloss suggests, because Britannica records that women invoked her, as a fertility deity, to aid conception and delivery.

CHAPTER 01

The temple on the Aventine

Rome's most important temple to her stood on the Aventine hill, said to date back to King Servius Tullius in the sixth century BC. It also worked as a strongbox, holding the foundation charter of the Latin League.

CHAPTER 02

A novel carried the name into English

Diana has been in regular use as a given name since the Renaissance. It spread through the English-speaking world after Walter Scott gave a character the name in Rob Roy, published in 1817. George Meredith followed in 1885 with Diana of the Crossways.

CHAPTER 03

What the American file counts

The Social Security Administration publishes a count of births by name for every year since 1880, and the figures here come from that file, for the exact spelling Diana. Diane is a separate entry in the same file and is counted separately throughout. Ranks appear only where the agency's own ordinal method and the competition method that ties names together produce the same number.

CHAPTER 04

Two years the record marks

Two years stand out in that file, and 1981 is the first. Diana gained 1,357 registrations over the year before, the fourth-largest one-year rise in the whole record. Lady Diana Spencer had married the Prince of Wales at St Paul's Cathedral that July.

The second is 1997. Registrations rose that year and again the next, reaching 3,853 before the count fell away.

Diana, Princess of Wales, had died following a car crash in Paris on 31 August. Senators Orrin Hatch and Patrick Leahy put a resolution to the Senate, which agreed to it on 3 September. It designated September 6 a National Day of Recognition for her humanitarian efforts.

That was the day of her funeral, and representatives of the charities she had worked with walked behind her coffin to Westminster Abbey, invited in recognition of her charity work. The name day is a much quieter thing. National Diana Day sits at the far end of this record and arrives without a signature, and nothing in the listings that carry it says who put it on the calendar.

TIMELINE

Timeline

Her temple rises on the Aventine

Rome's most important temple to Diana was said to date back to King Servius Tullius, and it housed the foundation charter of the Latin League.

Walter Scott names a heroine Diana

Rob Roy gave English readers a character called Diana Vernon, and the name became more common in the English-speaking world after it appeared.

A second novel carries the name

George Meredith published Diana of the Crossways, putting the name in front of another generation of English readers.

The name peaks in America

Diana reached its highest annual total in the United States birth-name file that year and has not approached it since.

A wedding watched by hundreds of millions

Lady Diana Spencer married Charles, Prince of Wales, at St Paul's Cathedral on July 29 in a globally televised ceremony.

The Senate agrees to S. Res. 118

Senators Orrin Hatch and Patrick Leahy submitted the resolution, which designated September 6 a National Day of Recognition for her humanitarian efforts.

WHY THIS DAY MATTERS

Why National Diana Day Matters

RECORD

The name's highest American year came before the Princess was born.

The obvious assumption about this day is that its most famous bearer made the name popular. The American birth record puts the name's highest year before she was born, so the day marks something older and larger than one life.

HUMANITARIAN

What the Senate chose to put on the record

The 1997 resolution named four areas of her work: breast cancer research and treatment, HIV and AIDS including the discrimination around it, banning antipersonnel landmines, and eliminating hopelessness around the world. In the year before her death she was an active campaigner for a landmine ban, visiting Angola in January and landmine projects in Bosnia in August.

OBSERVANCE

It is kept one person at a time

No organisation claims this day, and the observance that can actually be documented is personal in scale. On 31 July 2024 a law firm posted the day publicly for its own office manager, a colleague named Diana.

BY THE NUMBERS

National Diana Day by the Numbers

9,433
US girls named Diana in 1957
23,290
US girls named Diane in 1955
368,487
US girls named Diana since 1880
1,277
US girls named Diana in 2025
43rd
Diana's US name rank in 1957

GOOD TO KNOW

Surprising facts about National Diana Day

The moon was a later borrowing

Britannica says there was probably no original connection between Diana and the moon. She absorbed the identification from the Greek Artemis, along with Artemis's link to Hecate, which is why Latin literature sometimes calls her triformis.

Nemi's priest had to be a runaway slave

Britannica calls the grove of Diana Nemorensis, or Diana of the Wood, on the shores of Lake Nemi, her most famous place of worship. A custom there held that the priest be a runaway slave who had slain his predecessor in combat.

One of the Seven Wonders was hers too

At Ephesus the Temple of Artemis, also called the Temple of Diana, was counted among the Seven Wonders of the World.

Diane outran Diana for 43 straight years

From 1928 through 1970, more American girls were registered as Diane than as Diana. Diana took the lead back in 1971 by three births and has held it every year since.

The Senate sent a copy to her family

Section 2 of the 1997 resolution directed the Secretary of the Senate to send an enrolled copy of it to the family of Diana, Princess of Wales.

GET INVOLVED

How to Observe National Diana Day

EDITOR'S PICK

Recognize a Diana you actually know

This is a name day, so the simplest observance is the direct one. Tell someone who carries the name that the day is theirs.

READ

Read the Senate's own text

The resolution is public and reads in the Senate's own words rather than in a summary of them. The Government Publishing Office hosts the Congressional Record page that carries it in full.

LOOK

Look up the year a Diana was born

The national birth-name file gives a count for every name and every year it appears. Find the birth year and see how many other girls were registered with the same spelling on the agency's data page.

FIND

Find her in a museum collection

Roman art gives Diana a standard look, a huntress with a bow and a quiver. She usually appears with a hound or a deer beside her, so those are the details to look for on a label.

CHECK

Check which date a Diana abroad keeps

National name-day calendars put Diana on other dates entirely, and none of them lands on this one. In Poland and Lithuania her name day falls on August 13, so a greeting sent abroad may arrive at the wrong moment.

Test your knowledge

How well do you know National Diana Day?

1 / 8

At Rome, whose holiday was Diana's festival day?

Answer

No. It is an unofficial observance with no legal standing found, so July 31 is an ordinary working day.

COLOPHON

Sources

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

10sources
5primary records
5independently dated
Primary records
U.S. Government Publishing Office1997-09-03
Congressional Record, Volume 143, Number 114 (Wednesday, September 3, 1997), Pages S8743-S8744
The full text of S. Res. 118 and the record of the Senate agreeing to it, including the resolution's four named areas of the Princess of Wales's humanitarian work, its designation of September 6, 1997, and its instruction that an enrolled copy be sent to her family.
View source
Social Security Administration2025 data year
Beyond the Top 1000 Names (national baby-name data)
The agency's own national file of births by name, sex and year, one text file for each year since 1880. Every count, rank and comparison on this page was recomputed from those files for the exact spellings Diana and Diane, counted separately.
View source
The Royal Family
Diana, Princess of Wales
The household's own account of her life, giving her death on 31 August 1997 after a car crash in Paris, the funeral at Westminster Abbey on 6 September 1997, her sons' birth dates, and her 1997 landmine campaigning in Angola, London, Washington and Bosnia.
View source
Federal Register (National Archives)queried 2026-08-29
Federal Register documents search API
A search of the federal register of executive documents for the exact phrase National Diana Day, which returns zero results.
View source
Instagram2024-07-31
National Diana Day post by a law firm account, 31 July 2024
A dated public post keeping the day on July 31 for the firm's own office manager named Diana, and the earliest observance of the day this research could verify against a readable primary artefact.
View source
Additional coverage
Encyclopaedia Britannica
Diana | Myth, Goddess, and Cult
The reference article on the Roman goddess, covering her domains, the Aventine temple and the Latin League charter it housed, the Ides of August as a holiday for slaves, the grove at Lake Nemi and its runaway-slave priest, the Temple of Diana at Ephesus, and the caution that the moon was probably not originally hers.
View source
Perseus Digital Library1873
William Smith, A Dictionary of Greek and Roman Biography and Mythology: Diana
An independent nineteenth-century reference work that names the festival the dies servorum, the day of the slaves, kept every year by slaves of both sexes, and states that no other festival of Diana is heard of from early Rome. It cites Festus, Plutarch's Roman Questions and Martial.
View source
Behind the Name
Meaning, origin and history of the name Diana
The etymology of the given name, deriving it from the Latin dia or diva and linking it to the Indo-European root behind Zeus, and the account of its spread in English after Walter Scott's Rob Roy in 1817 and George Meredith's Diana of the Crossways in 1885.
View source
Behind the Name
Name Days for the name Diana
The national name-day dates recorded for Diana, including August 13 in Poland and Lithuania, and showing that no listed calendar places the name on July 31.
View source
Encyclopaedia Britannica
Diana, princess of Wales
The biographical article giving her birth on July 1, 1961, the St Paul's Cathedral wedding of July 29, 1981 and its television audience numbering in the hundreds of millions, the 1996 divorce, and the circumstances of her death in Paris.
View source
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