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Days Until May 15th

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May 15th, 2026

Last reviewed on May 7, 2026.

About May 15th

May 15th is one of 365 days on the calendar — and like every date, it has its own mix of facts, observances, and history. May 15th is the 135th day of the year (136th in leap years) in the Gregorian calendar, with 230 days remaining until the end of the year. The countdown below shows how many days remain until the next May 15th, with notes on what the date is known for, the traditions associated with it, and notable events that have happened on this day.

📚 Interesting Facts

May 15th is the 135th day of the year (136th in leap years) in the Gregorian calendar, with 230 days remaining until the end of the year

People born on May 15th are Taurus, known for their persistence and love of beauty and comfort

Famous people born on this day include L. Frank Baum (1856), author of 'The Wonderful Wizard of Oz', Pierre Curie (1859), physicist and Nobel laureate, and mountaineer Tenzing Norgay

Las Vegas, Nevada was founded on May 15, 1905, when 110 acres were auctioned off to become the downtown area

Emily Dickinson, one of America's most celebrated poets, died on this date in 1886 in Amherst, Massachusetts

🎊 Traditions & Celebrations

Paraguay celebrates Independence Day festivities that begin on May 14 and continue through May 15, marking independence from Spain in 1811

The United Nations observes the International Day of Families on May 15 annually, established in 1993 to promote family unity

The United States observes National Peace Officers Memorial Day on May 15, part of Police Week, honoring officers who have died or been disabled in the line of duty

May 15 is known as Straw Hat Day, marking the traditional start of wearing straw hats for the summer season

Las Vegas celebrates its founding on May 15, commemorating the 1905 land auction that established the city

📜 Historical Events on This Day

221

Liu Bei, Chinese warlord, proclaimed himself emperor of Shu Han

1602

Cape Cod was sighted by English navigator Bartholomew Gosnold

1718

The first machine gun in the world was patented by London lawyer James Puckle

1869

The National Woman Suffrage Association was formed by Susan B. Anthony and Elizabeth Cady Stanton

1905

Las Vegas, Nevada was founded when 110 acres were auctioned off to become the downtown area

1911

The U.S. Supreme Court dissolved Standard Oil for being a monopoly, citing the Sherman Antitrust Act

1928

Mickey Mouse appeared for the first time in the cartoon 'Plane Crazy' directed by Walt Disney and Ub Iwerks

1940

Dutch forces surrendered to German forces during World War II, beginning a 5-year Nazi occupation

1940

The first McDonald's fast food restaurant opened for business

1972

Governor George Wallace of Alabama was shot and paralyzed during a presidential campaign rally in Laurel, Maryland

Why Count Down to May 15th?

Whether you're planning ahead, celebrating a tradition, or marking a personal milestone, tracking the countdown to May 15th helps you prepare and build anticipation. Use CountDay.org to:

  • Never miss important dates and plan accordingly
  • Build excitement as the day approaches
  • Share the countdown with friends and family
  • Set reminders and prepare for celebrations
  • Track multiple countdowns in one convenient place