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.
We have 32 holidays listed for May 20.
National Be a Millionaire Day
Today, there are more than 12 million millionaires all around the globe.
Cameroon Republic Day
Cameroon Republic Day is celebrated with military and civilian parades, and speeches made by important personalities.
Clinical Trials Day
It is a day to highlight clinical research professionals' contributions to public health and medicine.
Culture Freedom Day
Join us as we celebrate the free culture movement this Culture Freedom Day.
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!
Hats for Headway Day
Help raise funds for brain injury survivors by posting a photo of yourself in a hat.
International Heritage Breeds Day
On International Heritage Breeds Day, let’s protect rare and farm animal breeds from extinction.
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 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 Learn to Swim Day
When in the water, safety first! Discover the importance of learning how to swim.
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 River Cleanup Day
Let's clean up our neighborhoods and local natural places this National River Cleanup Day.
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.
O. Henry Pun-off Day
Puns, wordplay, and wit — the perfect combination in O. Henry’s literary works!
Plant a Lemon Tree Day
Plant a Lemon Tree Day celebrates the goodness of lemon trees around the world.
Weights and Measures Day
Grab your measuring instruments. It's time to discover ‘weights and measures’ facts.
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 Fiddle Day
Everyone get your bows, it’s World Fiddle Day, so let’s go a-fiddling on this day!
World Metrology Day
The Metre Convention developed a global measurement standard to facilitate scientific study, industrial production, and global trade.