Birthday facts

Born on April 15.

Everyone born on April 15 is a Aries — ruled by Mars, first, loudest, already gone. The stone is diamond, the flower daisy, and the day is shared with Leonardo da Vinci and Leonhard Euler.

Sun sign

Aries ♈︎

the Ram · ruled by Mars · first, loudest, already gone

Birthstone

Diamond

April

Birth flower

Daisy

& sweet pea

Your book

Born on April 15? Add the year.

Then it is a pop-up book: the sky the day you arrived, the No. 1 that week, the president, what a stamp cost, your life in weeks, and who was exactly your age when they did the thing they are known for — and at the end, a birthday poster of the day, engraved, to take home. One field. The date lives after the # in the link, which no server sees — nothing about you leaves your browser.

Making it for someone else? Send it as a pop-up birthday card.

The old books say

Aries, March 21 to April 19.

The first sign, and the tradition treats it that way: the Ram is the one who goes first — through the door, into the argument, off the cliff. Ruled by Mars, a fire sign, and the books credit it with courage, impatience and a short memory for grudges, which is a generous way of saying it has already moved on. Its people are supposed to start things. Finishing them is what the other eleven are for.

Astrology, reported rather than endorsed — the astronomy is the part of the book that is real.

Good company

Also born on April 15.

The names most looked up among everyone who shares the day — leaning on the ones who last.

1452

Leonardo da Vinci

Italian painter and sculptor

1707

Leonhard Euler

Swiss mathematician and physicist

1843

Henry James

American novelist and short story writer

1959

Emma Thompson

English author and activist

1940

Jeffrey Archer

English playwright and author

1990

Emma Watson

English actress

1982

Seth Rogen

Canadian-American director and actor

1979

Luke Evans

Welsh actor and singer

On this day

What April 15 has seen.

It is Universal Day of Culture.

769The final session of the Lateran Council, convened to rectify abuses in the papal electoral process that had led to the elevation of the antipopes Constantine II and Philip, was held in Rome.

1191Henry VI, King of Germany, was crowned Holy Roman Emperor.

1755A Dictionary of the English Language by Samuel Johnson was first published, becoming one of the most influential dictionaries in the history of English.

1802English poet William Wordsworth and his sister Dorothy encountered a "long belt" of daffodils near Ullswater, inspiring him to pen his best-known work, "I Wandered Lonely as a Cloud".

The calendar

When April 15 falls.

A Wednesday in 2026, a Thursday in 2027, a Saturday in 2028, a Sunday in 2029, and a Monday in 2030.