Monday
May 20
24 holidays and observances fall on this day.
World Bee Day
World Bee Day raises awareness about the vital role of bees and pollinators in ecosystems and agriculture, promoting their protection and conservation.
Flower Day
Flower Day is observed on May 20 to enjoy flowers, gardening, bouquets, and the beauty of blooming plants.
World Metrology Day
World Metrology Day commemorates the 1875 Metre Convention, highlighting the importance of measurement science in global development and daily life.
Clinical Trials Day
Clinical Trials Day is observed on May 20 to recognize clinical research, study volunteers, and the people who advance medicine.
Eliza Doolittle Day
Celebrate Eliza Doolittle Day honoring personal transformation and the enduring legacy of Pygmalion and My Fair Lady.
International Red Sneakers Day
International Red Sneakers Day on May 20 raises global awareness about food allergies, promoting education and support for affected individuals.
World Product Day
World Product Day is marked on May 20 in 2026 to recognize product people, product craft, and shared professional learning.
Weights and Measures Day
Weights and Measures Day is observed on May 20 to recognize accurate measurement, fair trade, and metrology.
World Autoimmune Arthritis Day
World Autoimmune Arthritis Day is observed on May 20 to raise awareness of autoimmune and autoinflammatory arthritis diseases.
Whit Monday (Pentecost Monday)
Whit Monday is observed the day after Pentecost Sunday to continue Christian reflection on the Holy Spirit and the Easter season.
National Rescue Dog Day
National Rescue Dog Day is observed on May 20 to raise awareness of shelter dogs, adoption, fostering, and rescue work.
National Be a Millionaire Day
National Be a Millionaire Day is observed on May 20 to focus on money goals, saving, investing, and financial planning.
Emancipation Day in Florida
Emancipation Day in Florida is observed on May 20 to remember freedom’s announcement in Florida and Black history.
National Streaming Day
National Streaming Day is observed on May 20 to recognize streaming media, online entertainment, and changing viewing habits.
National Band Director’s Day
National Band Director’s Day is observed on May 20 to honor band directors, music teachers, and student ensemble leaders.
National Quiche Lorraine Day
National Quiche Lorraine Day is observed on May 20 to enjoy the savory French tart made with custard, bacon, and pastry.
National High Heels Day
National High Heels Day is observed on May 20 to recognize high heels, fashion style, and confident self-expression.
National Psychometrists Day
National Psychometrists Day is observed on May 20 to recognize psychometrists and their role in psychological testing.
National Pick Strawberries Day
National Pick Strawberries Day is observed on May 20 to enjoy fresh strawberries, seasonal picking, and local farms.
National Women In Aerospace Day
National Women In Aerospace Day is observed on May 20 to honor women in aviation, spaceflight, engineering, and aerospace careers.
Supply Chain Professionals Day
Supply Chain Professionals Day is celebrated on the third Monday in May to honor logistics and supply chain workers.
Josephine Baker Day
Josephine Baker Day is observed on May 20 to honor her artistry, civil rights work, and Resistance service.
Cameroon Republic Day
Cameroon Republic Day is observed on May 20 to mark national unity and the 1972 move to a unitary state.
East Timor Independence Day
East Timor Independence Day is observed on May 20 to mark Timor-Leste’s restored independence and national sovereignty.
Coming up next
International Tea Day
International Tea Day celebrates the cultural, economic, and health significance of tea, promoting sustainable production and fair trade practices.
End of the World
End of the World is observed on May 21 as a lighthearted look at failed apocalypse predictions and clear thinking.
Dinosaur Day
Celebrate Dinosaur Day on the third Tuesday of May by exploring the prehistoric world of dinosaurs through fun, educational activities for all ages.
World Meditation Day
World Meditation Day, celebrated on May 21, promotes the practice of meditation and its benefits for mental, emotional, and physical well-being.
World Day for Cultural Diversity for Dialogue and Development
World Day for Cultural Diversity for Dialogue and Development is observed on May 21 to honor culture, dialogue, and inclusion.
European Maritime Day
European Maritime Day is held annually to focus on maritime affairs, coastal sectors, and the sustainable blue economy.
National Talk Like Yoda Day
National Talk Like Yoda Day is observed on May 21 to enjoy Yoda-style speech, Star Wars quotes, and fan humor.
National Waitstaff Day
National Waitstaff Day is observed on May 21 to recognize servers, waitstaff, and respectful restaurant service.
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