May Holidays

In looking at the May Holidays listing, a couple of the most popular Holidays in May are Mother's Day and Memorial Day.  Looking down the  list below, especially in the Daily Holidays section, there are a lot of Military Holidays that fall in the month of May.


Holidays and Observances May Holidays - pictured is our Mom.

Our Mom, Thelma Smith, at Leigh's son, Ryan's wedding on 07-27-07 at the Catalina Country Club on Catalina Island. She has been a great Mom, and we look forward to celebrating many more Mother's Day's in her honor!


Below you will find our listing of May Holidays and Observances that fall in the month of May. 

NOTE:

  1. A page on each holiday will be coming soon and linked below.
  2. If a date is a movable holiday, that is different every year, we'll include the year as well as the date rule below. Otherwise, the holiday falls on the same date each year. 
  3. If we have made an error, have any incorrect dates, or have left off any Holidays, Observances, or Awareness Days etc, please let us know! Contact Us!


Annual Holidays and Observances
United Nations International Years

Each year, the United Nations chooses a few different topics, or themes that they want all the Countries around the World to focus on. 

In 2024, these are:

  • International Year of Camelids

In 2022, these are:

  • International Year of Artisanal Fisheries and Aquaculture

In 2021, these are:

  • International Year of Creative Economy for Sustainable Development
  • International Year of Fruits and Vegetables
  • International Year of Peach and Trust

In 2020, these are:

  • International Year of Plant Health
  • International Year of the Nurse and the Midwife

In 2019, these are:

  • International Year of Indigenous Languages
  • International Year of Moderation
  • International Year of the Periodic Table of Chemical Elements 

In 2017, these are:

  • International Year of Sustainable Tourism for Development

In 2016, these are:

  • International Year of Pulses

In 2015, these are:

  • International Year of Light and Light-based Technologies
  • International Year of Soils

In 2014, these are:

  • International Year of Crystallography
  • International Year of Family Farming
  • International Year of Small Island Developing States
  • International Year of Solidarity with the Palestinian People

In 2013, these are:

  • International Year of Quinoa
  • International Year of Water Cooperation

In 2012, these are:

  • International Year of Cooperatives
  • International Year of Sustainable Energy for All.


Monthly Holidays and Observances


  • Arthritis Awareness Month
  • Asian American and Pacific Islander Heritage Month
  • Asthma Awareness Month
  • Awareness of Medical Orphans Month
  • Better Hearing and Speech Month
  • Better Sleep Month
  • Breath Easy Month
  • Chip Your Pet Month
  • Clean Air Month
  • Correct Posture Month
  • Digestive Diseases Awareness Month
  • Electromagnetic Radiation Awareness Month
  • Employee Health & Fitness Month
  • Family Wellness Month
  • Fibromyalgia Education and Awareness Month
  • Gardening for Wildlife Month
  • Get Caught Reading Month
  • Gifts from the Garden Month
  • Global Employee Health and Fitness Month
  • Haitian Heritage Month
  • Heal the Children Month
  • Healthy Vision Month/UV Safety
  • High Blood Pressure Awareness Month
  • Home Schooling Awareness Month
  • Huntington's Disease Awareness Month
  • International Business Image Improvement Month
  • International Civility Awareness Month
  • International Internal Audit Awareness Month
  • International Victorious Woman Month
  • Jewish American Heritage Month
  • Latino Books Month
  • Lupus Awareness Month
  • Melanoma / Skin Cancer Detection and Prevention Month
  • Mental Health Month
  • Motorcycle Safety Awareness Month
  • National Asparagus Month
  • National Allergy and Asthma Awareness Month
  • National Barbeque Month
  • National Bicycle Safety Month
  • National Celiac Disease Awareness Month
  • National Chocolate Custard Month
  • National Comfort Month
  • National Community Action Month
  • National Duckling Month
  • National Egg Month
  • National Family Month (May 13 - June 17)
  • National Foster Care Month
  • National Gazpacho Aficionado Month
  • National Good Car-Keeping Month
  • National Hamburger Month
  • National Hepatitis Awareness Month
  • National High Blood Pressure Education Month
  • National Inventors Month
  • National Kite Month - March 28 - May 3, 2016
  • National Meditation Month
  • National Mediterranean Diet Month
  • National Mental Health Month
  • National Military Appreciation Month
  • National Moving Month
  • National Osteoporosis Awareness and Prevention Month
  • National Pet Month
  • National Photo Month
  • National Physical Fitness and Sports Month
  • National Preservation Month
  • National Salad Month
  • National Salsa Month
  • National Service Dog Eye Examination Month
  • National Smile Month
  • National Strawberry Month
  • National Stroke Awareness Month
  • National Sweet Vidalia Onion Month
  • National Teen Pregnancy Prevention Month
  • National Toxic Encephalopathy and Chemical Injury Awareness Month
  • National Tuberous Scierosis Awareness Month
  • National Vinegar Month
  • National Youth Traffic Safety Month
  • Neurofibromatosis Month
  • Older Americans Month
  • Personal History Awareness Month
  • Prepare Tomorrow's Parents Month - May 12 - June 16, 2019 (From Mother's Day to Father's Day)
  • REACT Month
  • Revise Your Work Schedule Month
  • Spiritual Literacy Month
  • Strike Out Strokes Month
  • Teen CEO Month
  • Tennis Month
  • Tourette Syndrome Awareness Month 
  • Trauma Awareness Month
  • Ultraviolet Awareness Month
  • Women's Health Care Month
  • Young Achievers / Leaders of Tomorrow Month

Weekly Holidays and Observances


  • Air Quality Awareness Week - April 26 - May 2, 2020
  • American Craft Beer Week - May 11-17, 2020
  • Armed Forces Week - May 10-16, 2020 (Week prior to Armed Forces Day, the Third Sunday in May)
  • Arson Awareness Week - May 3-9, 2020 (First Full Week in May)
  • Ascension of Baha'uLlah - Evening of May 27 - Evening of May 28, 2020
  • Be Kind to Animals Week - May 3-9, 2020 (First Full Week in May)
  • Black Single Parents Week - May 28 - June 3
  • Cannes International Film Festival - May 12-23, 2020 in Cannes, France is the most prestigious and most publicized film festival in the World.
  • Choose Privacy Week - May 1-7
  • Collegiate Safe Spring Break Programming - Late February - Early April
  • Dating and Life Coach Recognition Week - May 3-9, 2020 (First Full Week in May)
  • Drinking Water Week - May 3-9, 2020 (First Full Week in May)
  • Economic Development Week - May 4-9, 2020
  • Eid-Al-Fitr - Evening of May 23 - Evening of May 24, 2020
  • Emergency Medical Services Week (EMS) - May 17-23, 2020
  • Festival of Ridvan - April 19 - May 1, 2020
  • Flexible Work Arrangement Week - May 3-9, 2020 (First Full Week in May) 
  • Food Allergy Awareness Week - May 10-16, 2020
  • Frog Jumping Jubilee Day (Calaveras County, CA) - May 14-17, 2020
  • Global Day of Action on Military Spending - April 13 - May 9, 2019 (2020 TBD) 
  • Goodwill Industries Week - May 3-9, 2020 (First Full Week in May)
  • Healthy and Safe Swimming Week - May 18-24, 2020 (Week before Memorial Day Mon-Sun)
  • International Building Safety Week - May 3-9, 2020 (First Full Week in May)
  • International Clitoris Awareness Week - May 3-9, 2020 (First Full Week in May)
  • International Coaching Week - May 4-10, 2020
  • International Heritage Breeds Week - May 17-23, 2020 (Third Week of May)
  • International Pickles Week - Third Week in May
  • Invictus Games - May 9-16, 2020
  • Kids Win Week - May 3-9, 2020 (First Full Week in May)
  • Lag B'omer - Evening of May 11, 2020 to Evening of May 12, 2020
  • MCS Awareness Week or Multiple Chemical Sensitivity Awareness Week - (Second Week in May)
  • Medical Transcriptionist Week - May 17-23, 2020 (Third Week in May)
  • Mudbug Madness Days - May 23-25, 2020 (Memorial Day Weekend)
  • National African Violet Week - May 24-30, 2020
  • National Alcohol & Other Drug-Related Birth Defects Week - May 3-9, 2020 (First Full Week in May)
  • National Anxiety & Depression Awareness Week - May 3-9, 2020
  • National Backyard Games Week - May 25 - June 1, 2020 (Week before Memorial Day)
  • National Bike to Work Week - May 11-17, 2020 
  • National Bike Week - Third week in May
  • National Charter Schools Week - May 10-16, 2020
  • National Children's Book Week - May 4-10, 2020 and also November 9-15, 2020
  • National Correctional Officer's Week - May 3-9, 2020 (First Full Week in May)
  • National Dandelion Day - May 1-2, 2020
  • National Eosinophil Awareness Week - May 17-23, 2020 (Third Week in May)
  • National Etiquette Week - May 11-15, 2020 (Begins Second Monday of Full Week in May)
  • National Family Week - May 3-9, 2020 (First Full Week in May)
  • National Foul Ball Week - May 16-21
  • National Frozen Yogurt Week - Fourth week in May
  • National Hamburger Week - Second week in May
  • National Herb Week - May 3-9, 2020 (Week Prior to Mother's Day)
  • National Heritage Breeds Week - May 17-23, 2020 (Third Full Week in May)
  • National Historic Preservation Week - Second Week in May
  • National Hospital Week - May 10-16, 2020 (Second week in May)
  • National Hug Holiday Week - May 3-9, 2020
  • National Hurricane Preparedness Week - May 3-9, 2020
  • National Infant Immunization Week - April 26 - May 3, 2020 (Fourth Week of April)
  • National Library Legislative Day - May 4-5, 2020
  • National Medical Transcription Week - May 17-23, 2020 (Third Week in May)
  • National Morel Mushroom Festival - May 15-16, 2020 (Weekend after Mother's Day)
  • National Neuropathy Awareness Week - May 4-10, 2020
  • National New Friends, Old Friends - May 17-23, 2020 (Third Week in May)
  • National Nurses Week - May 6-12
  • National Nursing Home Week - May 10-16, 2020 (Starts on Mother's Day to Following Saturday)
  • National Pet Week - May 3-9, 2020 (First Full Week in May)
  • National Physical Education and Sports Week - May 1-7 (First Week in May)
  • National Police Week - May 10-16, 2020 (Second Full Week in May)
  • National Polka Weekend - May 22-24, 2020 (Memorial Day Weekend)
  • National Postcard Week - May 3-9, 2020 (First Full Week in May)
  • National Prevention Week - May 10-16, 2020 (Third Week in May)
  • National Public Gardens Week - May 8-17, 2020
  • National Raisin Week - May 3-9, 2020 (First Full Week in May)
  • National Return to Work Week - May 10-16, 2020
  • National Safe Boating Week - May 16-22, 2020 (Week Before Memorial Day)
  • National Safety Stand Down Week - May 4-8, 2020
  • National Small Business Week - May 3-9, 2020
  • National Stuttering Awareness Week - May 11-17, 2020 (Second Full Week in May)
  • National Sun Safety Week - May 4-10, 2020
  • National Tire Safety Week - May 17-23, 2020 (Starts Memorial Day Weekend)
  • National Toddler Immunization Week - April 26 - May 3, 2019 (2020 TBD)
  • National Tourism Week - May 3-9, 2020 (First Full Week in May)
  • National Transportation Week - May 10-16, 2020 (Always has Third Friday in May)
  • National Travel & Tourism Week - Second week in May
  • National Unicycle Week - May 17-23, 2020 (Begins on Third Sunday in May)
  • National Vegetarian Awareness Week - May 11-17, 2020
  • National Wildflower Week - May 4-10, 2020
  • National Women's Health Week - May 10-16, 2020
  • North American Occupational Safety and Health Week (NAOSH) - May 3-9, 2020 (First Full Week in May)
  • Old Time Player Piano Weekend - May 23-25, 2020 (Memorial Day Weekend)
  • Older Americans Mental Health Week - May 24-30, 2020 (Last Full Week in May) 
  • Peripheral Neuropathy Awareness Week - May 4-9, 2020
  • PGA Championship - May 14-17, 2020
  • Preservation Week - April 26 - May 2, 2020
  • Public Service Recognition Week - May 3-9, 2020 (First Full Week in May)
  • Puppy Mill Action Week - May 4-10, 2020 (Begins the Monday before Mother's Day)
  • Ramadan - Evening of April 23, 2020 to Evening of May 23, 2020 (Dates may vary depending on location) - (Muslim Holiday)
  • Reading is Fun Week - May 10-16, 2020 (Second Full Week in May)
  • Root Canal Appreciation Week - May 3-9, 2020
  • Safe Kids Week - May 5-12, 2019 (2020 TBA)
  • Salute to Moms 35+ Week - May 10-16, 2020 (Starts on Mother's Day)
  • Salvation Army Week - May 10-16, 2020 (Second Week in May)
  • Screen-Free Week (Digital Detox Week - Formerly TV Turnoff Week) - April 26 - May 3, 2020
  • Scripps National Spelling Bee - May 25-28, 2020 (Tuesday - Thursday of Memorial Day Weekend)
  • Shavuot - Evening of May 28 to Evening of May 29, 2020
  • Stewardship Week - April 26 - May 3, 2020 (Last Sunday in April to First Sunday in May)
  • Teacher Appreciation Week - May 3-9, 2020 (First Full Week in May)
  • The Biggest Week in American Birding - May 8-17, 2020
  • Time of Remembrance and Reconciliation for those who Lost their Lives during the Second World War - May 8-9
  • Universal Family Week - May 10-16
  • Update Your References Week - May 3-9, 2020
  • Vivid Sydney - May 22 - June 13, 2020
  • Week of Solidarity with the Peoples of Non Self-Governing Territories - May 25-31
  • Week of the Classroom Teacher - May 3-9, 2020 (First Full Week in May)
  • Work at Home Mom's Week - May 11-17, 2020
  • World Cocktail Week - May 6-13
  • World Dystonia Awareness Week - May 3-11
  • World Migratory Bird Day - May 9-10, 2020 (Second Weekend in May)
  • World Schizophrenia Awareness Week - May 18-24, 2020
  • World Trade Week - May 17-23, 2020 (Third Week in May)

Daily Holidays and Observances


  • Batman Day - May 1
  • Beltane - May 1
  • Global Love Day - May 1
  • International Space Day - May 1, 2020 (First Friday in May)
  • International Sunflower Guerilla Gardening Day - May 1
  • International Worker's Day - May 1
  • Kentucky Oaks - May 1, 2020
  • Law Day - May 1
  • Lei Day - May 1 (U.S. State of Hawaii)
  • Loyalty Day - May 1
  • May Day - May 1
  • National Chocolate Parfait Day - May 1
  • National Purebred Dog Day - May 1
  • Save the Rhino Day - May 1
  • School Lunch Hero Day - May 1, 2020 (First Friday in May)
  • Silver Star Service Banner Day - May 1
  • Tuba Day - May 1, 2020 (First Friday in May)
  • Astronomy Day - May 2, 2020 (A Saturday from mid-April to mid May, on or before 1st quarter moon)
  • Beer Pong Day - May 2, 2020 (First Saturday in May) 
  • Bladder Cancer Awareness Day - May 2, 2020 (First Saturday in May)
  • Bombshell's Day - May 2, 2020 (First Saturday in May)
  • Free Comic Book Day - May 2, 2020 (First Saturday in May)
  • International Doodle Dog Day - May 2, 2020
  • International Harry Potter Day - May 2 
  • Join Hands Day: Youth and Adults Volunteering Together - May 2, 2020 (First Saturday in May)
  • Kentucky Derby - May 2, 2020 (First Saturday in May)
  • Learn to Ride a Bike Day - May 2, 2020 (First Saturday in May)
  • Mariachi Day - May 2, 2020 (First Saturday in May)
  • Martin Z. Mollusk Day - May 2, 2020 (First Saturday in May)
  • National Auctioneers Day - May 2, 2020 (First Saturday in May)
  • National Explosive Ordnance Disposal (EOD) Day - May 2, 2020 (First Saturday of May)
  • National Fitness Day - May 2, 2020 (First Saturday in May)
  • National Herb Day - May 2, 2020 (First Saturday in May)
  • National Homebrew Day - May 2, 2020 (First Saturday in May)
  • National Play Outside Day - May 2, 2020 - (First Saturday in EVERY Month)
  • National Scrapbooking Day - May 2, 2020 (First Saturday in May)
  • National Truffles Day - May 2
  • National Wildfire Community Preparedness Day - May 2, 2020
  • Spring Astronomy Day - May 2, 2020
  • Start Seeing Monarchs Day - May 2, 2020 (First Saturday in May)
  • World Beer Pong Day - May 2, 2020 (First Saturday in May)
  • World Naked Gardening Day - May 2, 2020 (First Saturday in May)
  • World Tuna Day - May 2
  • Garden Meditation Day - May 3
  • International Baby Lost Mother's Day - May 3, 2020 (First Sunday in May)
  • International Bereaved Mothers Day - May 3, 2020 (First Sunday in May)
  • Lemonade Day - May 3, 2020 (First Sunday in May)
  • Mayday for Mutts - May 3, 2020 (First Sunday in May)
  • Motorcycle Mass and Blessings of the Bike - May 3, 2020 (First Sunday in May)
  • National Infertility Survival Day - May 3, 2020 (First Sunday in May)
  • National Lumpy Rug Day - May 3
  • National Public Radio Day - May 3
  • National Raspberry  Popover Day - May 3
  • National Specially-abled Pets Day - May 3
  • National Two Different Colored Shoes Day - May 3
  • Paranormal Day - May 3
  • Rural Life Sunday - May 3, 2020 (First Sunday in May)
  • Sun Day - May 3
  • World Laughter Day - May 3, 2020 (First Sunday in May)
  • World Press Freedom Day - May 3
  • Anti-Bullying Day - May 4
  • Bird Day - May 4
  • Dave Brubeck Day (Jazz Pianist and Composer) - May 4
  • Intergalactic Star Wars Day - May 4
  • International Firefighter's Day - May 4
  • International Respect for Chickens Day - May 4
  • Kent State Shootings Remembrance - May 4 (Local Observance in Ohio)
  • Melanoma Monday - May 4, 2020 (First Monday in May)
  • National Candied Orange Peel Day - May 4
  • National Orange Juice Day - May 4
  • Petite and Proud Day - May 4
  • Renewal Day - May 4
  • Rhode Island Independence Day - May 4
  • Star Wars Day - May 4
  • World Give Day - May 4
  • Bonza Bottler Day - May 5
  • Cartoonists Day - May 5
  • Childhood Depression Awareness Day - May 5, 2020 (First Tuesday in May)
  • Childhood Stroke Awareness Day - May 5
  • Cinco de Mayo - May 5
  • Europe Day (Council of Europe) - May 5
  • Foster Care Day - May 5, 2020 (First Tuesday in May)
  • Hand Hygiene Day - May 5
  • International Midwives Day - May 5
  • National Chocolate Custard Day - May 5
  • National Hoagie Day - May 5
  • National Teachers Day - May 5, 2020 (Tuesday of the First Full Week in May)
  • Square Root Day - not until May 5, 2025
  • Totally Chipotle Day - May 5
  • World Asthma Day - May 5, 2020 (First Tuesday in May)
  • World Portuguese Language Day - May 5
  • Great American Grump Out - May 6, 2020 (First Wednesday of May)
  • International No Diet Day - May 6
  • Joseph Brackett Day - May 6
  • National Crepes Suzette Day - May 6
  • National Day to Prevent Teen and Unplanned Pregnancy - May 6, 2020 (First Wednesday in May)
  • National (Deaf) Interpreter Day - May 6, 2020
  • National Golf Day - May 6, 2020
  • National Nurses Day, or National RN Recognition Day - May 6
  • National School Nurse Day - May 6, 2020 (Wednesday of National Nurse Week which is always on May 6-12)
  • National Skilled Trades Day - May 6, 2020
  • No Homework Day - May 6
  • Project Aces Day - May 6, 2020 (First Wednesday in May) (Aces = All Children Exercise Simultaneously)
  • Day of Vesak - May 7, 2020
  • National Barrier Awareness Day - May 7
  • National Children's Mental Health Awareness Day - May 7, 2020
  • National Day of Prayer - May 7, 2020 (First Thursday in May)
  • National Day of Reason - May 7, 2020 (First Thursday in May) - Set up in 2003 by Humanists/Atheists on the same day as the National Day of Prayer for a secular alternative
  • National Roast Leg of Lamb Day - May 7
  • World Password Day - May 7, 2020 (First Thursday in May)
  • Child Care Provider Day - May 8, 2020 (Friday before Mothers Day)
  • Emancipation Day - (Columbus, Mississippi) - May 8
  • Fintastic Friday: Giving Sharks a Voice - May 8, 2020 (Second Friday in May)
  • Free Trade Day - May 8
  • Iris Day - May 8
  • Military Spouse Appreciation Day - May 8, 2020 
  • National Animal Disaster Preparedness Day - May 8
  • National Coconut Cream Pie Day - May 8
  • National Empanada Day - May 8
  • National Provider Appreciation Day - May 8, 2020 (Friday before Mother's Day)
  • National Public Gardens Day - May 8, 2020
  • No Socks Day - May 8
  • Truman Day - May 8, 2020 (On or around May 8)
  • V-E Day - May 8
  • White Lotus Day - May 8
  • World Ovarian Cancer Day - May 8
  • World Red Cross Day - May 8
  • American Indian Day - May 9, 2020 (Second Saturday in May)
  • Bereaved Mother's Day - May 9, 2020 (Second Saturday in May)
  • Birthmother's Day - May 9, 2020 (Saturday before Mother's Day)
  • Cornelia de Lange Syndrome Awareness Day - (CdLS) May 9, 2020 (Second Saturday in May)
  • International Migratory Bird Day - May 9, 2020 (Second Saturday in May)
  • Jamestown Day - May 9, 2020
  • Letter Carrier's Stamp Out Hunger Food Drive Day - May 9, 2020 (Second Saturday in May)
  • Mother Ocean Day - May 9, 2020 (Saturday before Mother's Day)
  • National Archery Day - May 9, 2020 (Second Saturday in May)
  • National Babysitters Day - May 9, 2020 (Saturday before Mother's Day)
  • National Dog Mom's Day - May 9, 2020 (Saturday before Mother's Day)
  • National Miniature Golf Day - May 9, 2020 (Second Saturday in May)
  • National Moscato Day - May 9
  • National Train Day - May 9, 2020 (Held on the Saturday closest to May 10th)
  • National Windmill Day - May 9, 2020 (Second Saturday in May)
  • Occupational Safety and Health Professionals Day - May 9
  • Stay Up All Night - May 9, 2020 (Second Saturday in May)
  • World Belly Dance Day - May 9, 2020 (Second Saturday in May)
  • World Fair Trade Day - May 9, 2020 (Second Saturday in May)
  • Confederate Memorial Day - May 10 (States of North Carolina and South Carolina)
  • Mother's At the Wall Day - May 10, 2020 (Always Mother's Day)
  • Mother's Day - May 10, 2020 (Second Sunday in May)
  • National Shrimp Day - May 10
  • World Lupus Day - May 10
  • Accounting Day - May 11, 2020
  • Confederate Memorial Day Observed - (South Carolina) - May 11, 2020
  • Eat What you Want Day - May 11
  • National Foam Rolling Day (RE: Massage) - May 11
  • Root Canal Appreciation Day - May 11
  • National Women's Check-up Day - May 11, 2020 (Monday following Mother's Day)
  • Free Cone Day (Haagen-Dazs) - May 12, 2020
  • International Myalgic Encephalomyelitis / Chronic Fatigue Syndrome Awareness Day - May 12
  • International Nurses Day - May 12
  • Limerick Day - May 12
  • National Fibromyalgia Awareness Day - May 12
  • National Hospital Day - May 12
  • National Nutty Fudge Day - May 12
  • National Odometer Day - May 12 
  • Primary Election Day in West Virginia - May 12, 2020 (Second Tuesday of May during even years)
  • Children of Fallen Patriots Day - May 13 
  • Donate a Day's Wages to Charity - May 13, 2020 (Second Wednesday in May)
  • Frog Jumping Day - May 13
  • IEEE Global Engineering the Future Day - May 13
  • International Hummus Day - May 13
  • National Apple Pie Day - May 13
  • National Bike to School Day - May 13, 2020 (Second Wednesday in May)
  • National Fruit Cocktail Day - May 13
  • National Night Shift Workers Day - May 13, 2020 (Second Wednesday in May)
  • National Receptionists Day - May 13, 2020 (Second Wednesday in May)
  • National Third Shift Workers Day - May 13, 2020 (Second Wednesday in May)
  • World Cocktail Day - May 13
  • World Orienteering Day - May 13, 2020 
  • National Buttermilk Biscuit Day - May 14
  • National Chicken Dance Day - May 14
  • The Stars and Stripes Forever Day - May 14
  • Underground America Day - May 14
  • Dinosaur Day - May 15
  • Endangered Species Day - May 15, 2020 (Third Friday in May)
  • Hyperemisis Gravidarum Awareness Day - May 15
  • International Conscientious Objector Day - May 15
  • International Day of Families - May 15
  • International Defense Transportation Day - May 15, 2020 (Third Friday in May)
  • International Kangaroo Care Awareness Day - May 15
  • International MPS Awareness Day - May 15
  • International Virtual Assistants Day - May 15, 2020 (Third Friday in May)
  • NASCAR Day - May 15, 2020 (Third Friday in May)
  • National Bike to Work Day - May 15, 2020 (Third Friday in May)
  • National Chocolate Chip Day - May 15
  • National Defense Transportation Day - May 15, 2020 (Third Friday in May)
  • National Nylon Stockings Day - May 15
  • National Pizza Party Day - May 15, 2020 (Third Friday in May)
  • O. Henry Pun-Off Day - May 15, 2020
  • Peace Officers Memorial Day - May 15
  • Straw Hat Day - May 15
  • TSC Global Awareness Day (Tuberous Sclerosis Complex) - May 15
  • Armed Forces Day - May 16, 2020 (Third Saturday in May)
  • Biographer's Day - May 16
  • Do Dah Day (Salute to Silliness) - May 16, 2020  (Third Saturday in May)
  • International Pickle Day - May 16
  • Love a Tree Day - May 16
  • National Coquilles St. Jacques Day - May 16
  • National Learn to Swim Day - May 16, 2020 (Third Saturday of May - week before Memorial Day)
  • National Sea Monkey Day - May 16
  • Nickel Day - May 16
  • Preakness - May 16, 2020 (Third Saturday in May)
  • Wear Purple for Peace Day - May 16
  • World Fiddle Day - May 16, 2020 (Third Saturday in May)
  • International Child Helpline Day - May 17
  • International Day Against Homophobia, Transphobia, and Biphobia - May 17
  • National Cherry Cobbler Day - May 17
  • National Walnut Day - May 17
  • Ride a Unicycle Day - May 17, 2020 (Third Sunday in May)
  • Stepmother's Day - May 17, 2020 (The Sunday after Mother's Day)
  • World Hypertension Day - May 17
  • World Information Society Day - May 17
  • World Neurofibromatosis Day (NF Day) - May 17
  • World Telecommunication and Information Society Day - May 17
  • World Telecommunication Day - May 17
  • HIV Vaccine Awareness Day - May 18
  • I Love Reese's Day - May 18
  • International Museum Day - May 18
  • National Cheese Souffle Day - May 18
  • National Museum Day - May 18  
  • Supply Chain Professional Day - May 18, 2020 (Third Monday in May)
  • Victoria Day - May 18, 2020
  • Boys Club Day - May 19
  • Hepatitis Testing Day - May 19
  • Malcolm X Day - May 19
  • May Ray Day - May 19
  • National Asian and Pacific Islander HIV/AIDS Awareness Day - May 19
  • National Devil's Food Cake Day - May 19
  • Plant Something Day - May 19
  • Eliza Doolittle Day - May 20
  • Emancipation Day (Florida) - May 20
  • Emergency Medical Services for Children Day - May 20, 2020 (Wednesday of EMS Week)
  • Everybody Draw Mohammed Day - May 20
  • Flower Day - May 20
  • International Clinical Trials Day - May 20
  • Josephine Baker Day - May 20
  • National Employee Health and Fitness Day - May 20, 2020 (Third Wednesday in May)
  • National Juice Slush Day - May 20, 2020 (Third Wednesday in May)
  • National Rescue Dog Day - May 20
  • Pick Strawberries Day - May 20
  • Turn Beauty Inside Out Day - May 20, 2020
  • Weights and Measure Day - May 20
  • World Autoimmune Arthritis Day - May 20
  • World Bee Day - May 20
  • World Metrology Day - May 20
  • Ascension Day (of Jesus) - May 21, 2020
  • Eat More Fruits & Vegetables Day - May 21, 2020 (Thursday of Memorial Day Week)
  • Emergency Medical Services Day - May 21, 2020
  • End of the World or Rapture Party Day - May 21
  • National Strawberries and Cream Day - May 21
  • National Waiters and Waitresses Day - May 21
  • Red Nose Day - May 21, 2020
  • World Day for Cultural Diversity for Dialogue and Development - May 21
  • Canadian Immigrants Day - May 22
  • Carb Day - May 22, 2020
  • Don't Fry Day - May 22, 2020 (Friday before Memorial Day)
  • Harvey Milk Day (California) - May 22
  • International Day for Biological Diversity - May 22
  • National Cooler Day - May 22, 2020
  • National Heat Safety Awareness Day - May 22, 2020 (Fourth Friday in May)
  • National Maritime Day - May 22
  • National Road Trip Day - May 22, 2020
  • National Title Track Day - May 22, 2020 (Fourth Friday in May)
  • National Vanilla Pudding Day - May 22
  • National Wig Out Day - May 22, 2020 (Friday before Memorial Day)
  • World Goth Day - May 22
  • Amateur Radio Military Appreciation Day (ARMAD) - May 23, 2020 (Saturday of Memorial Day Weekend)
  • Armed Forces Day Military-Amateur Crossband Communications Day - May 23, 2020
  • Declaration of the Bab Day (Bahai Faith) - May 23
  • International Day to End Obstetric Fistula - May 23
  • International Heritage Breeds Day - May 23, 2020
  • International Jazz Day - May 23, 2020 (Saturday of Memorial Day Weekend) Also observed on April 30 each year
  • International Turtle Day - May 23
  • Julia Pierpont Day - May 23, 2020 (Fourth Saturday in May)
  • National Heritage Breeds Day - May 23, 2020 (Saturday of Third Full Week in May)
  • National Taffy Day - May 23
  • World Crohn's and Colitis Day - May 23
  • World Turtle Day - May 23
  • Asparagus Day - May 24
  • Brother's Day - May 24
  • Indianapolis 500 - May 24, 2020 (Sunday of Memorial Day weekend)
  • International Women's Day for Peace and Disarmament - May 24
  • National Escargot Day - May 24
  • Neighbor Day - May 24, 2020 (Sunday before Memorial Day)
  • Scavenger Hunt Day - May 24
  • World Schizophrenia Day - May 24
  • African Liberation Day - May 25
  • Jefferson Davis Birthday - May 25, 2020 (State of Mississippi)
  • Memorial Day - May 25, 2020 (Last Monday in May)
  • National Brown-Bag-It Day - May 25
  • National Hamburger Day (May 25, 2020, July 28 and also December 21)
  • National Missing Children's Day - May 25
  • National Tap Dance Day - May 25
  • National Wine Day - May 25
  • Prayer for Peace, Memorial Day - May 25, 2020 (Last Monday in May / Same Day as Memorial Day)
  • Towel Day - May 25
  • National Blueberry Cheesecake Day - May 26
  • National Cherry Dessert Day - May 26
  • National Paper Airplane Day - May 26
  • World Lindy Hop Day - May 26
  • National Grape Popsicle Day - May 27
  • National Senior Health & Fitness Day - May 27, 2020 (Last Wednesday in May)
  • World Otter Day - May 27, 2020 (Last Wednesday in May)
  • National Brisket Day - May 28
  • Slugs Return From Capistrano Day - May 28
  • Whooping Crane Day - May 28
  • Composting Day - May 29
  • Heat Awareness Day - May 29, 2020
  • International Day of United Nations Peacekeepers - May 29
  • Learn About Composting Day - May 29
  • National Coq Au Vin Day - May 29
  • Pink Flamingo Day - May 29
  • World Digestive Health Day - May 29
  • International Hug Your Cat Day - May 30
  • National Mint Julep Day - May 30
  • Want a Flower Day - May 30
  • World MS Day (Multiple Sclerosis) - May 30
  • Bay to Breakers Race - Was May 31, 2020 (Third Sunday in May in San Francisco, CA). Postponed to September 20, 2020 Due to COVID-19
  • National Macaroon Day - May 31
  • National Save Your Hearing Day - May 31
  • National Speak in Complete Sentences Day - May 31
  • Necrotizing Fasciitis Awareness Day - May 31
  • Pentecost (also known as Whitsunday or Whit Sunday) - May 31, 2020
  • What You Think Upon Grows Day - May 31
  • Whit Sunday - May 31, 2020
  • World No-Tobacco Day - May 31

 

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May Holidays - Daily Detail

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