Here’s How the Months of the Year Got Their Names

Brooke Nelson Alexander

By Brooke Nelson Alexander

Updated on Jul. 10, 2025

We'll give you a hint: Gods, kings and numbers are involved

What’s in a name?

Have you ever wondered about the origins of month names? Some months, like October and December, are fairly easy to figure out. The precise origins of other month names, like April, have stumped historians for centuries. In most cases, month names have a lot to do with Greek and Roman gods, a couple of ancient emperors and, of course, root words for different numbers. Keep reading to find out the history behind your favorite month—or months—of the year.

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1 / 12
janus statue
Kizel Cotiw-an/Shutterstock

January

Fun fact: January has not always been first on our calendar. For ancient Romans, the year began in March and finished 10 months later in December, according to Wonderopolis.org, an education site by the National Center for Families Learning. The months of January and February, meanwhile, did not have official titles for centuries. When King Pompilius revamped the Roman calendar around 690 B.C., he named January after Janus, the Roman god of doors and beginnings. Seems appropriate for the first month of the new year.

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roman clock
Vitaliy Kyrychuk/Shutterstock

February

Ancient Romans always celebrated the year’s end with a festival called “Februa.” When King Pompilius named the 12th month of the Roman year, he chose February after that period of celebration. In 1582, Pope Gregory tweaked the calendar again, changing the start of the year to Jan. 1 for most Western countries. England and the American colonies, for their part, continued to celebrate the new year in February until 1752.

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sword
evgeny freeone/Shutterstock

March

If you were born before 690 B.C., you would have considered March—not January—the first month of the calendar year. Tradition called for Romans to put down their swords in a ceasefire during January and February (the two months between the old and new years), which meant that wars would have resumed on March 1. As a result, many experts believe that the Romans named March after Mars, the Roman god of war.

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flower tree buds plant
Anest/Shutterstock

April

Believe it or not, the source of April’s name has stumped historians for centuries. Because it was the second month on the ancient Roman calendar, some claim its title comes from the Latin word for “second.” Others believe the name is linked to the term “aperire,” which means “to open” in Latin—named for the budding greenery in spring. Still others speculate that April was named after the Greek goddess of love and beauty, Aphrodite. The true origins remain a mystery.

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vine leaves wall
Larcsky/Shutterstock

May

The month of May was named in honor of the Greek goddess Maia, guardian of nature and growing plants. Never heard of her? You’re not alone. Maia may have been one of the lesser-known deities in Greek mythology, but she punched above her weight. According to Greek mythology, Maia was the daughter of Atlas, the titan who carried the world on his shoulders, and the mother of Hermes, the messenger for the gods. She was also known as the goddess of the earth, so it’s no surprise that this springtime month bears her name.

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wedding ring
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June

June kicks off our modern-day wedding season, and its namesake might explain why. The Romans named June after Juno, the Roman goddess of love and marriage. Like her Greek counterpart Hera, Juno was married to the chief Roman god Jupiter and was considered the queen of the gods.

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julius caesar statue
Massan/Shutterstock

July

Because the ancient Roman calendar started with March, the month of July would have been the fifth month of the year. It’s only logical, then, that the month was once called “Quintilis,” which translates to “fifth” in Latin. But in 44 B.C., July was renamed in honor of Julius Caesar, whose birthday fell in this month.

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julius caesar statue
Gilmanshin/Shutterstock

August

The source of August’s name is similar to that of July’s. August had been previously known as “Sextillia”—Latin for “sixth”—but was later named after Augustus Caesar when he became emperor of Rome. The great-nephew of Julius Caesar, Augustus went by the name of Octavian as a child. He only took the title Augustus, meaning “consecrated or venerable” in Latin, after claiming the Roman throne.

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A brass number seven mounted on a dark, textured wall with visible screws.
StephanieFraikin/Shutterstock

September

As the seventh month in the ancient Roman calendar, September has origins that will sound familiar to attentive readers: The root “septem” means “seven” in Latin. But like July and August, the numbering of the months is now slightly skewed—in today’s calendar, September is the ninth month of the year.

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number eight
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October

From octagon to octopus, the Latin root “octo” is common in our everyday vocabulary. It means—you guessed it—”eight.” Back in the day, the Romans considered October to be the eighth month of the year and named it as such. Though the calendar was reordered centuries ago, the original names of the months have managed to stick around.

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Faded black number nine painted on textured concrete, partially covered in dirt, with a vertical stripe on the right.
Tharnapoom Voranavin/Shutterstock

November

Like the months of September and October, the story behind November’s name is surprisingly simple. The Romans dubbed the ninth month of the calendar year with the root “novem,” which is the term for “nine” in Latin.

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number ten
StephanieFraikin/Shutterstock

December

At the very least, the modern-day and ancient Roman calendars share one thing in common: They both end the year with the month of December. But the Roman pattern of naming months by numerical order still applies. It won’t take a rocket scientist to guess, then, that December got its title from the Latin word “decem,” or “ten.”

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Sources:

  • Wonderopolis: “How did the months of the year get their names?”
  • Dictionary.com: “The Origins of July and the Jubilant Holidays it Holds”