International Day of Light
Celebrate the International Day of Light on May 16, recognizing the essential role of light in science, culture, and sustainable development.
Sunday
May 16
23 holidays and observances fall on this day.
World Baking Day
Celebrate World Baking Day by embracing the joy of baking and sharing your creations with loved ones.
Drawing Day
Drawing Day is observed on May 16 to celebrate sketching, doodling, and creative expression.
International Boys’ Day
International Boys’ Day is observed on May 16 to support boys’ well-being and mentoring.
International Day of Living Together in Peace
International Day of Living Together in Peace is observed on May 16 to promote peace and inclusion.
International AIDS Candlelight Memorial
International AIDS Candlelight Memorial is observed on the third Sunday of May to remember AIDS losses and support HIV awareness.
Whit Sunday (Pentecost Sunday)
Whit Sunday is observed 50 days after Easter to remember Pentecost and the coming of the Holy Spirit.
National Barbecue Day
Happy National Barbecue Day! It's time to celebrate America's delicious grilled cuisine.
National Mimosa Day
Celebrate National Mimosa Day on May 16 by enjoying this classic brunch cocktail and exploring creative variations with friends and family.
Stepmother's Day
Stepmother's Day is observed on the Sunday after Mother’s Day to honor stepmothers and blended family bonds.
National Love a Tree Day
National Love a Tree Day is observed on May 16 to appreciate trees, tree care, shade, wildlife habitat, and green spaces.
National Piercing Day
National Piercing Day is observed on May 16 to recognize piercings, body jewelry, and safe self-expression.
Rural Life Sunday
Rural Life Sunday is commonly observed on the third Sunday of May to honor rural communities, farming, and church ministry.
National Wear Purple for Peace Day
National Wear Purple for Peace Day is observed on May 16 to wear purple for peace and goodwill.
National Do Something Good for Your Neighbor Day
National Do Something Good for Your Neighbor Day is observed on May 16 to honor kindness, helpful deeds, and neighborly care.
National Honor Our LGBT Elders Day
National Honor Our LGBT Elders Day is observed on May 16 to honor LGBT elders, their stories, and community contributions.
Nickel Day
Nickel Day is observed on May 16 to explore nickel as a metal, coin, and useful material in everyday objects.
National Sea Monkey Day
National Sea Monkey Day is observed on May 16 to enjoy Sea-Monkeys, brine shrimp, nostalgia, and simple science.
National Coquilles Saint Jacques Day
National Coquilles Saint Jacques Day is observed on May 16 to enjoy a classic French scallop dish with rich sauce.
National Biographer's Day
National Biographer's Day is observed on May 16 to honor biographers, biography, and the craft of writing real lives.
Take Your Parents To The Playground Day
Take Your Parents to the Playground Day is observed on the third Sunday of May for outdoor family play and park time.
Middlesex Day in England
Middlesex Day in England is observed on May 16 to honor historic county identity and the Battle of Albuera connection.
Waiters Day
Waiters Day is observed on May 16 to recognize front-of-house hospitality workers.
Coming up next
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.
Browse the calendar
Fewer
More holidays
Bookmarked