We have 25 holidays listed for May 18.
May 18th is the 138th day in the Gregorian calendar. On this day France's TGV train achieved a world rail speed record of 320 miles per hour; Mt. St. Helens erupted in Washington state, killing 57 people and causing $3 billion in damage, and Constantine the Great announced free food for all the citizens of Constantinople. Famous May 18th birthdays include Tina Fey and country crooner George Strait. Today is National No Dirty Dishes Day and National Pizza Party Day.
Battle of Las Piedras
On the anniversary of the Battle of Las Piedras, see its enduring mark on Uruguay’s history.
Culture Freedom Day
Join us as we celebrate the free culture movement this Culture Freedom Day.
International Astronomy Day
Don’t have a telescope? Here's how to celebrate like a true galactic scout.
International Museum Day
It’s an opportunity to support museum education and make everyone aware of the importance of museums.
Mother Whistler Day
Find out how to celebrate Mother Whistler Day right here with us at National Today.
National Brock Day
This National Brock Day, take some time to learn the name’s history and meaning.
National Cheese Soufflé Day
The word ‘soufflé’ comes from the French word ‘souffler,’ which means ‘puff up’ or ‘blow up.’
National Marvin Day
Know someone named Marvin? Make their day by celebrating their name right here, right now.
National River Cleanup Day
Let's clean up our neighborhoods and local natural places this National River Cleanup Day.
National Visit Your Relatives Day
A day dedicated to spending time with your loved ones and cherishing family time.
Plant a Lemon Tree Day
Plant a Lemon Tree Day celebrates the goodness of lemon trees around the world.
State Flag of Turkmenistan Day
Appreciate the beauty and symbolism of the Turkmen flag and keep it flying high.
World AIDS Vaccine Day
An annual event to raise awareness about H.I.V. infection and AIDS and their prevention.
World Fiddle Day
Everyone get your bows, it’s World Fiddle Day, so let’s go a-fiddling on this day!