Monday
May 17, 2027
19 holidays and observances fall on this day.
World Hypertension Day
World Hypertension Day raises awareness about high blood pressure, promoting prevention and control to reduce the risk of cardiovascular diseases.
International Child Helpline Day
International Child Helpline Day raises awareness about the vital role of child helplines in providing support and protection to children worldwide.
International Day Against Homophobia Transphobia and Biphobia
IDAHOBIT is observed on May 17 to raise awareness of anti-LGBTQIA+ discrimination.
World Information Society Day
World Information Society Day is observed on May 17 to focus on digital access, communication, and the information society.
Neurofibromatosis Awareness Day
Neurofibromatosis Awareness Day is observed on May 17 to raise awareness of NF, patient support, and research.
Pinot Grigio Day
Pinot Grigio Day is observed on May 17 to appreciate the crisp white wine, food pairings, and responsible tasting.
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 Walnut Day
Celebrate National Walnut Day by exploring the health benefits and culinary versatility of walnuts through delicious recipes and community events.
National Cherry Cobbler Day
National Cherry Cobbler Day is observed on May 17 to enjoy a classic cherry dessert.
National Idaho Day
National Idaho Day is observed on May 17 to recognize Idaho history and state pride.
National Pack Rat Day
National Pack Rat Day is observed on May 17 to sort clutter and rethink saved belongings.
National Graduation Tassel Day
National Graduation Tassel Day is observed on May 17 to honor graduates and academic milestones.
Supply Chain Professionals Day
Supply Chain Professionals Day is celebrated on the third Monday in May to honor logistics and supply chain workers.
National Pinkfix Day
National Pinkfix Day is observed on May 17 for women’s financial awareness and confidence.
Constitution Day in Norway
Constitution Day in Norway is observed on May 17 to honor the 1814 Constitution.
Children’s Day in Norway
Children’s Day in Norway is observed on May 17 with children’s parades and national celebration.
Liberation Day in DR Congo
Liberation Day in DR Congo is observed on May 17 to mark the 1997 political transition.
National Mushroom Hunting Day
National Mushroom Hunting Day is observed on May 17 to learn about mushroom foraging and safe identification.
Constitution Day in Nauru
Constitution Day in Nauru is observed on May 17 to honor the nation’s Constitution.
Coming up next
International Museum Day
International Museum Day highlights the importance of museums in cultural exchange, education, and community development worldwide.
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.
National Speech Pathologist Day
National Speech Pathologist Day is observed on May 18 to honor SLPs and their work in communication and swallowing support.
National No Dirty Dishes Day
National No Dirty Dishes Day is observed on May 18 to enjoy meals with less cleanup and a cleaner kitchen sink.
I Love Reese's Day
I Love Reese's Day is observed on May 18 to enjoy Reese’s candy, peanut butter cups, and chocolate-peanut butter treats.
National Visit Your Relatives Day
National Visit Your Relatives Day is observed on May 18 to reconnect with family members and strengthen personal ties.
Mother Whistler Day
Mother Whistler Day is observed on May 18 to enjoy whistling, playful sound, and its odd link to Whistler’s Mother.
National Cheese Soufflé Day
National Cheese Soufflé Day is observed on May 18 to enjoy a savory French-style baked egg and cheese dish.