Who started National Jacob Day?

The earliest observance that can be verified is a public geocaching meet-up held near Tucson, Arizona on March 23, 2023. Beyond that no founder, first year, or reason for the date has been documented, and the years circulating on listing sites trace back to unsourced entries.

Did Twilight make Jacob a popular name?

Jacob first reached number one on the US Social Security Administration list in 1999, six years before Twilight was published in 2005. The novels overlapped with the later part of that run, but they cannot explain how it began.

Is Jacob's name day March 23 or July 25?

Both, in different traditions. March 23 is National Jacob Day, while July 25 is the older name day slot in European calendars, taken from the Roman Catholic feast of St James the Great.

National Jacob Day

Next celebratedTuesday, March 23, 2027

Jacob's day honors a name counted twice: on America's hundred-year list of boys' names, Jacob sits thirtieth and James, the same Hebrew name, sits first.

See how to celebrate

Countdown to the day

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Last updated August 18, 2026 · by the Holiday Calendar TeamHave an update or spot an error?

YEARLY DATEMarch 23

OBSERVED INInternationally

CATEGORYNames

ORIGIN

Community Origin

FOUNDING ENTITY

Not documented

FIRST OBSERVED

Not documented

HOW THE HOLIDAY CAME TO BE

The documented trail begins with geocachers in Tucson.

No founder, filing, or proclamation for National Jacob Day has been located, and its author has never been identified. The earliest observance that can be dated is a public geocaching meet-up held near Tucson, Arizona, on March 23, 2023.

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INTRO

Counted twice on America's hundred-year list of boys' names

National Jacob Day honors a name that turns up twice on the same government list. On the Social Security Administration's roll of the most-used American boys' names of the last hundred years, Jacob sits at thirtieth. James sits at first, and James is the same name.

The gap between the two entries is enormous. That roll holds 4,505,076 boys recorded as James. It holds 965,218 recorded as Jacob.

One Hebrew name produced both. Latin speakers softened Iacobus into Iacomus, and English quietly kept both roads open. The observance built on that name is a far smaller thing, and whoever proposed it is not on record.

ORIGINS

Jacob Day history

INTRODUCTION

The name enters Genesis as a description of a grip. The second twin emerges holding on to the heel of Esau, and the text names him for it. Ya'aqov leans on 'aqev, the Hebrew word for heel.

The harsher reading comes from inside the story rather than from a dictionary. Esau, stripped of a birthright and then a blessing, asks whether his brother was named Jacob in order to supplant him twice over.

CHAPTER 01

The name the story takes back

Reference works still offer two derivations. One follows the heel and the supplanting; the other traces the name to a hypothetical Ya'aqov'el, meaning may God protect. The narrative is less patient than either: a stranger wrestles him through a night and tells him his name will be Israel.

CHAPTER 02

How Jacob became James

Greek scribes wrote the name as Iakobos, and Latin took it in as Iacobus. Latin speakers then softened the middle of it into Iacomus. English picked that form up in the late 1100s and called it James.

Most languages never made the split. Behind the Name puts it plainly: unlike English, many languages do not have separate spellings for the two names. English kept both and let them drift.

CHAPTER 03

What England did with the pair

The same reference records that through the Middle Ages, English Christians used James while Jacob was mainly regarded as a Jewish name. Only after the Protestant Reformation did Jacob come into general use as a Christian given name.

The Latin form left fossils in English politics. Partisans of the deposed James II were called Jacobites, and the adjective Jacobean still means of James, king or apostle.

CHAPTER 04

Where the day comes in

National Jacob Day sits at the far end of that line, and it arrives thin. The day's author has never been identified, and no filing or proclamation for it has surfaced. What can be dated is a geocaching meet-up near Tucson in 2023, advertised with no prizes and just the company of other cachers.

TIMELINE

Timeline

James splits off from Jacobus

English adopted the Late Latin form Iacomus as James, leaving one Hebrew name with two separate English spellings.

The Missale Aboense is printed

The calendar of the Diocese of Turku was the first printed calendar of saints adapted to Finnish society, an ancestor of the modern name day list.

Jacobites take the Latin name

Supporters of the deposed James II were called Jacobites, from Jacobus, the Latin form of his name.

Jacobean enters English

The adjective was first recorded meaning literally of James, whether the king or the apostle.

Jacob displaces Michael in America

Michael had held the top of the US boys' list the year before, and Jacob took it.

Geocachers meet near Tucson

A short evening event in the Tucson area is the first observance of the day that can be dated.

WHY THIS DAY MATTERS

Why We Love National Jacob Day

TRADITIONS

Judaism, Christianity and Islam each hold the same figure.

Within Judaism, Jacob is regarded as a patriarch of the Jewish people and a scholar. Muslims regard him, as Ya'qub, as a prophet, and Christians have emphasized his righteousness and understood his story in terms of God's will.

BEARERS

Two Jacobs did work that outlasted them

Jacob Grimm formulated Grimm's law in his Deutsche Grammatik, the account of how consonants correspond across genetically related languages. The twentieth-century painter Jacob Lawrence rendered Black life and history in vivid, stylized series, in tempera or gouache on paper.

PICKUP

Libraries and coffee shops actually mark it

In March 2025 the Facebook page Everything Libraries posted a National Jacob Day prompt for a book display. A day later the coffee business Jacob's Java marked it by posting a photograph from its opening in 1992.

BY THE NUMBERS

National Jacob Day by the Numbers

14: Consecutive years at US No. 1
274,077: US boys named Jacob, 2000s
5,126: Boys named Jacob, England and Wales 2013
41st: Jacob's rank, England and Wales 2025

GOOD TO KNOW

National Jacob Day Around the World

Finland

The University of Helsinki's Almanac Office maintains the Finnish and Swedish name day lists and renews them every five years based on how common each name is. The country runs four official name day calendars in total.

Māori and Hawaiian

The further the name travelled from Latin the less it looks like itself. It arrives as Hemi in Māori, and as Kimo or Iakopa in Hawaiian.

Spain

St James, the same name in another form, is the patron saint of the country and of Galicia, and his Roman Catholic feast day is July 25, the slot Jacob's cognates occupy in European calendars.

Scotland and Ireland

The same Hebrew original arrives here as Hamish, Jamie and Séamus, none of which looks anything like Jacob.

Philippines

Jacob ranked sixth among boys' names in 2024. In Canada that same year it ranked twenty-fifth.

GET INVOLVED

How to Celebrate National Jacob Day

Read the passage the name comes from

Genesis 25 gives the naming scene in three lines. Genesis 27 gives Esau's furious pun on it, and the two together show the meaning being argued over inside the story.

LOOK

Look up where the name ranks near you

The answer changes sharply from one country to the next, and each national registry publishes its own. The Office for National Statistics releases the England and Wales list every year.

GATHER

Gather the Jacobs you know for an hour

The bar is low and that is the point: no programme, no prizes, nothing to win. An hour and a shared first name is the entire premise.

COLLECT

Collect the name in other languages

Jacques, Giacomo, Jaime, Jakub and Jaakko all descend from the same Hebrew original. A reference list of those forms stretches from Cornish to Turkish.

PUT

Put July 25 in the calendar too

That is the feast of St James the Great, and the slot Jacob's cognates hold in European name day calendars. Keeping both gives the name its old date and its new one.

Test your knowledge

How well do you know National Jacob Day?

1 / 8

Which common English name comes from the same Hebrew original as Jacob?

Answer

No. It is an unofficial observance with no proclamation, law, or government recognition found anywhere, so it is an ordinary working day.

COLOPHON

Sources

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

19sources

12primary records

8independently dated

Primary records

U.S. Social Security Administration

Top Names Over the Last 100 Years

The 100 most-used American given names for births since 1926, with exact counts.