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Days Until May 18th

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May 18th, 2026

Last reviewed on May 7, 2026.

About May 18th

May 18th is one of 365 days on the calendar — and like every date, it has its own mix of facts, observances, and history. May 18th is the 138th day of the year (139th in leap years) in the Gregorian calendar, with 227 days remaining until the end of the year. The countdown below shows how many days remain until the next May 18th, 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 18th is the 138th day of the year (139th in leap years) in the Gregorian calendar, with 227 days remaining until the end of the year

People born on May 18th are Taurus, known for their charm, creativity, and strong sense of values

Famous people born on this day include Persian mathematician and poet Omar Khayyam (1048), architect Walter Gropius (1883), and philosopher Bertrand Russell (1872)

The catastrophic eruption of Mount St. Helens on May 18, 1980 killed 57 people and devastated 210 square miles of wilderness in Washington state

The birthstone for those born in May is the emerald, symbolizing rebirth and love with its lush green color

🎊 Traditions & Celebrations

Washington State recognizes May as Volcano Awareness Month, with events commemorating the Mount St. Helens eruption and discussing volcanic safety

Mount St. Helens National Volcanic Monument, established in 1982, hosts annual memorial events honoring the lives lost in the 1980 eruption

Various National Day observances founded by National Day Calendar are celebrated on May 18, encouraging community participation

Taurus season celebrations continue as people born under this zodiac sign gather to celebrate their birthdays and shared characteristics

Educational institutions and geological societies use this date to raise awareness about volcanic activity and natural disaster preparedness

📜 Historical Events on This Day

332

Emperor Constantine the Great announced that people in Constantinople would receive free food distributions

1642

Montreal was founded by Paul de Chomedey, sieur de Maisonneuve, establishing a French settlement in North America

1804

Napoleon Bonaparte was appointed Emperor of the French, marking the beginning of the First French Empire

1860

Abraham Lincoln won the Republican Party presidential nomination over William H. Seward at the convention in Chicago

1896

The U.S. Supreme Court ruled in Plessy v. Ferguson that the 'separate but equal' doctrine was constitutional, legalizing segregation

1933

President Franklin D. Roosevelt signed an act creating the Tennessee Valley Authority to provide economic development

1974

India successfully detonated its first nuclear weapon under Project Smiling Buddha, becoming the sixth nation to do so

1980

Mount St. Helens erupted in Washington, killing 57 people and causing $3 billion in damage with the largest debris avalanche in recorded history

2009

The LTTE were defeated by the Sri Lankan government, ending almost 26 years of civil war

Why Count Down to May 18th?

Whether you're planning ahead, celebrating a tradition, or marking a personal milestone, tracking the countdown to May 18th 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