We have 27 holidays listed for May 20.
May 20th is the 140th day in the Gregorian calendar. On this day Chinese authorities declared martial law after pro-democracy protests in Tiananmen Square; Cuba gained independence from the United States, and Levi Strauss received his patent for blue jeans. Famous May 20th birthdays include Cher and Jimmy Stewart. Today is National Be a Millionaire Day.
Clinical Trials Day
It is a day to highlight clinical research professionals' contributions to public health and medicine.
East Timor Independence Day
Let’s learn about the bravery and courage of the people that fought for East Timor’s independence.
Eliza Doolittle Day
This holiday, celebrate the Cockney accent and how we can be better versions of ourselves!
Flower Day
Flower Day is here! What can be lovelier than gifting flowers to those you love?
Hats for Headway Day
Help raise funds for brain injury survivors by posting a photo of yourself in a hat.
International Red Sneakers Day
Worldwide, millions of people will be made aware of the hazards of food allergies and anaphylaxis.
National Band Director’s Day
If you’ve ever enjoyed the music performed at school sporting events, thank the Band Director!
National Eli Day
Show all the Elis you know they — and their name — are loved.
National High Heels Day
It’s that time of the year to strut in your highest heels and make history.
National Jase Day
Rejoice and celebrate all the Jases out there with our awesome celebration suggestions.
National Pick Strawberries Day
“Let me take you down 'cause I'm going to Strawberry Fields!”
National Quiche Lorraine Day
Want to be a Masterchef without the hassle of cooking several dishes? We’ve got you covered.
National Rescue Dog Day
Step up to show kindness and love to rescue dogs this National Rescue Dog Day.
National Rio Day
Rio is an independent name that is associated with strength and bravery.
National Streaming Day
Grab your remote and popcorn to enjoy your favorite shows this National Streaming Day.
National Women In Aerospace Day
The day also celebrates women working in commercial aviation, defense, and space.
Victoria Day
It’s a day to celebrate all the wonderful things that make Canada, Canada.
Weights and Measures Day
Grab your measuring instruments. It's time to discover ‘weights and measures’ facts.
Whit Monday
Whit Monday is a Christian holiday celebrating the descent of the Holy Ghost.
Whit Monday (Martinique)
Celebrate Whit Monday with a burst of religious flavor. Let us get you started!
Whit Monday (Saint Barthelemy)
It's Whit Monday, a day to remember the ultimate sacrifice made by Jesus Christ.
Whit Monday (Saint Martin)
Learn about Whit Monday, when the holiday originated, and how to celebrate it.
World Autoimmune Arthritis Day
Let's support each other in the fight against autoimmune diseases. Together, we can find a cure.
World Bee Day
Bees are critical to plant reproduction and human nutrition; let us protect them!
World Metrology Day
The Metre Convention developed a global measurement standard to facilitate scientific study, industrial production, and global trade.