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.
Friday
May 16
26 holidays and observances fall on this day.
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 Virtual Assistants Day
International Virtual Assistants Day honors remote professionals and is observed on the third Friday of May.
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 Pizza Party Day
National Pizza Party Day is observed on the third Friday in May to celebrate sharing pizza with friends and family.
National Mimosa Day
Celebrate National Mimosa Day on May 16 by enjoying this classic brunch cocktail and exploring creative variations with friends and family.
National Bike to Work Day
National Bike to Work Day encourages cycling as a commute option on the third Friday of May.
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.
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 Defense Transportation Day
National Defense Transportation Day is observed on the third Friday of May to honor transportation, logistics, and defense readiness.
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.
NASCAR Day
NASCAR Day is celebrated on the third Friday in May to honor stock car racing, fans, teams, and charitable giving.
National Endangered Species Day
National Endangered Species Day is observed on the third Friday of May to raise awareness of at-risk wildlife and habitats.
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.
Spinal Cord Injury Awareness Day
Spinal Cord Injury Awareness Day is observed on the third Friday of May to raise support and awareness for people with SCI.
Hats for Headway Day
Hats for Headway Day is observed on the third Friday of May to raise awareness and funds for brain injury support.
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.
World Whisky Day
World Whisky Day is observed on the third Saturday of May to enjoy whisky and tasting traditions.
International Day Against Homophobia Transphobia and Biphobia
IDAHOBIT is observed on May 17 to raise awareness of anti-LGBTQIA+ discrimination.
World Fiddle Day
World Fiddle Day is observed on the third Saturday of May to honor fiddle music and traditions.
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.
World Orienteering Day
World Orienteering Day begins on the third Saturday of May to promote map-based outdoor navigation.
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