May 2023 Holidays

May 2023 Monthly Holidays

 

Adopt A Horse Month
ALS Awareness Month  Link
(Amyotrophic Lateral Sclerosis or Lou Gehrig's Disease) 
American Cheese Month  Link (Moved from October in  2019)
America's Wetlands Month  Link
Apraxia Awareness Month   Link
APS Awareness Month Link
Aramanth Month Link
Asian American & Pacific Islander Heritage Month
Asthma Awareness Month
Awareness of Medical Orphans Month
Better Hearing & Speech Month Link
Bladder Cancer Awareness Month  Link
Borderline Personality Disorder Month Link
Brain Tumor Awareness Month Link
Building Safety Month Link Link
Celiac Awareness Month Link
Chip Your Pet Month Link  Link
Clap 4 Health Month
Clean Air Month
Creative Beginnings Month
Cystic Fibrosis Awareness Month Link
Drum Month
EDS (Ehlers-Danlos Syndrome) Awareness Month Link
Family Reunion Month  (Between Mother's Day and Father's Day)
Family Wellness Month
Fibromyalgia Education and Awareness Month
Food Allergy Action Month
Freedom Shrine Month Link
Gardening for Wildlife Month
Get Caught Reading Month
Gifts From The Garden Month
Global Civility Awareness Month
Global Health and Fitness Month Link
Go Fetch! Food Drive for Homeless Animals Month 
Haitian Heritage Month
Heal the Children Month
Healthy Vision Month
Home Schooling Awareness Month
Huntington's Disease Awareness Month
International Audit Month Link
International Business Image Improvement Month
International Civility Awareness Month
International Mediterranean Diet Month
International Victorious Woman Month
Jewish-American Heritage Month
Latino Books Month
Lupus Awareness Month Link
Melanoma/Skin Cancer Detection & Prevention Month
Mental Health Month
Military Appreciation Month Link
Motorcycle Safety Month
Mystery Month
National Allergy/Asthma Awareness Month Link
National Arthritis Awareness Month
National Barbeque Month
National Better Hearing Month Link
National Bike Month Link
National Chamber Music Month Link
National Egg Month Link  Link
National Electrical Safety Month  Link
National Foster Care Month Link
National Good Car Keeping Month
National Hamburger Month  Link  Link
National Hepatitis Awareness Month
National High Blood Pressure Education Month  Link
National Inventors Month Link
Neurofibromatosis Awareness Month (aka NF Month) Link
(World) Lyme Disease Awareness Month Link
National Meditation Month
National Mediterranean Diet Month Link
National Mental Health Month
National Military Appreciation Month
National Pet Cancer Awareness Month Link  Link   (Also in November Different Sponsor)
National Osteoporosis Prevention Month
National Photo Month
National Physical Fitness & Sports Month
National Physiotherapy Month Link
National Preservation Month
National Read To Your Baby Bump Month
National Recommitment Month  Link
National Salad Month
National Salsa Month (The Sauce)
National Service Dog Eye Examination Month  Link 
National Smile Month Link  (May 18-June 18)
National Strawberry Month
National Stroke Awareness Month
National Sweet Vidalia Onions Month
National Syringomyelia Awareness Month  Link  
National Tuberous Sclerosis Month Link
National Water Safety Month Link
National Vinegar Month
National Youth Traffic Safety Month Link
Necrotizing Fasciitis Awareness Month
Neurofibromatosis Awareness Month Link
Older Americans Month
Pediatric Feeding Disorder Awareness Month  Link
Personal History Month Link
Pet Cancer Awareness Month Link
Prader-Willi Syndrome Awareness Month
Preeclampsia Awareness Month Link
Prepare Tomorrow's Parents Month (5/11-6/15)
React Month
Revise Your Work Schedule Month
Save Your Tooth Month
Social Security Education Awareness Month
Skin Cancer Awareness Month  Link
Spiritual Literacy Month
Strike Out Strokes Month
Sturge-Weber Awareness Month Link
Teen CEO Month
Tennis Month
Tay-Sachs and Canavan Diseases Month
Textile Month  Link
Tourettes Syndrome Awareness Month (5/15 - 6/15) Link
Toxic Encephalopathy and Chemical Injury Awareness Month Link
Ultra-violet Awareness Month
Women's Health Care Month
Worldwide Home Schooling Awareness Month
Young Achievers of Tomorrow Month
National Family Month (5/12 to 6/16) 

May 2023 Weekly Holidays

Air Quality Awareness Week: 1-5 Link  (First M-F)
Children's Book Week: 1-7 (First full week starting Monday)  Link  (Also Nov. 7-13)
Construction Safety Week: 1-5 Link
Goodwill Industries Week: 1-5  (First Full Week)
Geek Week: 1-6  Link  (First Week)
Hurricane Preparedness Week: 1-7   Link
*National Hug Holiday Week: 1-7
National Safety Stand Down Week (Constuction Falls): 1-5 Link
*National Small Business Week: 1-7 Link
National Sun Safety Week:  1-7  Link
Peripheral Neuropathy Awareness Week:  1-7  Link
National WildflowerWeek:  1-7 (First Full Week starting Monday)
PTA Teacher Appreciation Week: 1-5 (First Full M-F Week)
Screen-Free Week (Digital Detox Week) :  1-7  Link 
Teacher Appreciation Week: 1-5  (First Full Week M-F)
*(World) Dystonia Awareness Week: 3-11 Link
*National Nurses Day and Week: 6-12 Link  Link
Toad Suck Daze: 6-7 (First Weekend)
Be Kind To Animals Week: 7-13 (First Full Week)
Dating and Life Coach Recognition Week:7-13  Link (First Full Week)
Drinking Water Week: 7-13  Link (First Full Week)
Flexible Work Arrangement Week: 7-13  (First Full Week)
International Clitoris Awareness Week: 7-13 (First Full Week)
National Alcohol & Drug Related Birth Defects Awareness Week: 7-13   (First Full Week)
National Anxiety & Depression Awareness Week: 7-13 (First Full Week)
National Correctional Officer's Week: 7-13   (First Full Week)
National Family Week: 7-13  (First Full Week)
National Hospital Week: 7-13 Link
National Hug Holiday Week: 7-13
National Root Canal Appreciation Week: 7-13   Link  (First Full Week)
National Tick Awareness Week: 7-13 (Seond Week)
National Tourism Week: 7-13  Link  (First Full Week)
National Pet Week: 7-13  Link  (First Full Week)
North American Occupational Safety & Health Week: 7-13 (First Full Week) Link
Public Service Recognition Week: 7-13   (First Full Week) Link
Update Your References Week: 7-13  (First Full Week)
Craft Brewers Week: 7-10  Link
Food Allergy Awareness Week: 7-13 Link
Salvation Army Week:  7-13  (Second Week)
Spring Astronomy Week: 7-13  (Always has Spring Astronomy Day 5/7)
Economic Development Week: 8-12  Link
National Etiquette Week: 8-12  (Begins 2nd Monday of Full Week)
National Stuttering Awareness Week: 8-14 (Second full Week)
Teacher Appreciation Week: 8-12 (M-F of First Full Week)
*Universal Family Week: 10-16
World Orienteering Days: 10-16  Link  
National Public Gardens Week: 12-21  Link
National Nursing Home Week: 14-20  (Starts Mother's Day to Saturday)
National Return To Work Week:  14-20  (2nd Full Week)
National Transportation Week: 14-20 (Always Includes the 3rd Friday)
National Women's Health Week:14-20  (2nd Full Week)
Reading is Fundamental Week:  14-20   Link  (2nd Full Week)
Salute to Moms 40+ Week:  14-20  (Starts on Mothers Day)
Work At Home Moms Week:  14-20  (Starts on Mother's Day)
World Trade Week: 14-20  (3rd Week)
American Craft Beer Week: 15-21 Link  (Begins 3rd Monday of Full Week)
International Coaching Week: 15-21 Link
National Bike to Work Week: 15-21 Link  (3rd Week M-F) 
PGA Championship: 15-21  Link
*Police Week: 15-21
Cannes Film Festival: 16-27
*National Foul Ball Week: 16-21
EMS (Emergency Medical Services) Week: 21-27  Link  (3rd Full Week)
International Heritage Breeds Week: 21-27  (3rd Full Week)
International New Friends, Old Friends Week: 21-27  (3rd Week)
National Eosinophil Awareness Week: 21-27   Link  (Third Week)
National Medical Transcription Week: 21-27 Link
National Unicycle Week: 21-27   (Begins on 3rd Sunday)
National Backyard Games Week: 21-27   (Week before Memorial Day)
National Safe Boating Week: 21-27 (Week before Memorial Day)
World Schizophrenia Awareness Week: 21-27 Link
Healthy and Safe Swimming Week: 21-27 (Week before Memorial Day M-S) Link
National Seat Belt Reinforcement Week: 22-6/4  Link
Display Week: 23-25 Link
Health Information Professionals Week: 23-29  Link
Mule Days : 23-28 Link  
Fleet Week: 24-30
*Week of Solidarity With The People of Non-Self-Governing Territories: 25-31
Old-Time Player Piano Weekend:  25-28 (Always Memorial Day Weekend)  Link
Mudbug Madness Days:  26-29   (Memorial Day Weekend)  
National Polka Weekend: 26-28    Link (Always Memorial Day Weekend)
*Black Single Parents Week: 28-6/3 
National African Violet Week: 28-6/4
National Marina Days: 29-9/4 (From Memorial Day to Labor Day)  Link
Scripps Spelling Bee Finals: 5/30-6/1 (Tues.-Thurs. after Memorial Day)

May 2023 Daily Holidays

*Amtrak Day: 1
*Batman Day: 1 (Also in September)
*Beltane: 1 Link
*Discuss Your Wage Day: 1
*Executive Coaching Day: 1
*Global Love Day: 1 Link
*Hug Your Cat Day: 1 (No website. Sponsor Marisa D'Vari, NY)
*International Workers Day: 1  Link  Link
*Keep Kids Alive! Drive 25 Day: 1
*Law Day: 1
*Lei Day: 1
*Loyalty Day: 1
*May Day: 1
*May One Day: 1
Melanoma Monday: 1 (First Monday)
*Mother Goose Day: 1
*National Bubba Day: 1
*National Foster Care Day: 1  Link
*National High Potassium Awareness Day: 1
*National Purebred Dog Day: 1 Link
*New Homeowner's Day: 1
*Religious Brothers Day: 1 Link
*School Principals' Day: 1
*Silver Star Banner Day: 1 Link
*Skyscraper Day: 1
*Stepmother's Day: 1

Childhood Depression Awareness Day: 2 (First Tuesday)
Foster Care Day: 2 Link  (First Tuesday)
*Life Insurance Day: 2  Link
*Roberts Rule of Order Day: 2
*U.S. Capitol Police Day: 2
World Asthma Day: 2 (First Tuesday)
*World Tuna Day: 2

 

*Garden Meditation Day: 3
Great American Grump Out: 3 (First Wednesday)
*Lumpy Rug Day: 3
National Bike and Roll To School Day: 3
*National Special-abled Pets Day: 3 
National Day to Prevent Teen & Unplanned Pregnancy: 3 Link (First Wednesday)
National (Deaf) Interpreter Day: 3 Link   Link   (First Wednesday)
National Skilled Trades Day: 3 Link (First Wednesday)
*National Two Different Colored Shoes Day: 3
*Paranormal Day: 3
*Public Radio Day: 3
*SAN (Storage Area Network) Architect Day: 3 Link
*Sun Day: 3  Link
*Wild Koala Day: 3  Link
*World Press Freedom Day: 3

 

*Intergalactic Star Wars Day: 4 (May the Fourth Be With You!) Link
*International Firefighters Day: 4 Link  Link
*International Respect for Chickens Day: 4  Link
*National Business Broker's Day: 4
National Day of Prayer: 4 (First Thursday) Link
National Day of Reason: 4 (First Thursday)
*Petite and Proud Day: 4
*World Give Day: 4
World Password Day: 4  Link (First Thursday)

*African World Hertitage Day: 5
Buddha Day: 5 Link  (Celebration Date) Note: Historical date is always April 8)
*Cartoonists Day: 5
*Chanel No. 5 Day: 5
*Childhood Stroke Awareness Day: 5 Link
*Cinco de Mayo: 5 Link
Dandelion Day: 5-6  Link
Day of Vesak: 5 Link  (Traditionally on the Full May Moon)  NOTE: Vesak varies per Buddist country. See the link! 
*International Day of The Midwife: 5 Link
*International Roller Derby Day: 5
Martin Z. Mollusk Day: 5  Link  (First Friday of first full week)  
*National Astronaut Day: 5 Link
*Revenge of the Fifth (Star Wars Sith): 5 Link
School Lunch Hero Day: 5 Link  (First Friday)
*Silence The Shame Day: 5  Link
Space Day: 5 Link (First Friday)
*Totally Chipotle Day: 5
Tuba Day: 5  (First Friday) Link
*World Asthma Day: 5
*World Portuguese Language Day: 5

 


Bladder Cancer Awareness Day: 6 Link (First Saturday)
Bombshell's Day: 6  (First Saturday) (Victoria's Secret)
Free Comic Book Day: 6 Link   (First Saturday)
Herb Day: 6 Link (First Saturday) 
National Infertility Survival Day: 6 (First Sunday)
International Bereaved Mothers' Day: 6 (First Sunday) Link
International Doodle Dog Day: 6  (First Saturday)
International Female Ride Day: 6 Link
*International Management Accounting Day: 6
*Joseph Brackett Day: 6
Join Hands Day: 6 Link (First Saturday)
Kentucky Derby: 6 (First Saturday)
Learn To Ride A Bike Day: 6 (First Saturday)
Mariachi Day: 6  (First Saturday)
National Auctioneers Day: 6 (First Saturday)
National Fallen Firefighters Memorial Day: 6-7  Link 
National Fitness Day:  6 (First Saturday)
National Homebrew Day: 6 Link  (First Saturday)
National Play Outside Day:  6 Link (First Saturday)
National Scrapbooking Day:  6  (First Saturday) Link
National Train Day: 6 (Saturday closest to the 10th.)
National Wildfire Community Preparedness Day:  6 Link  (First Saturday)
*No Diet Day: 6
O. Henry Pun-off Day: 6 Link
*No Homework Day: 6
*Nurses Day or National RN Recognition Day: 6  Link Link
*Russel Stover Candies Day: 6
Start Seeing Monarchs Day:  6 Link (First Saturday)
World Naked Gardening Day:  6 Link (First Saturday)


*Beaufort Scale (Wind) Day: 7
*Cosmopolitan Day: 7 (Drink)
*Cystinosis Awareness Day: 7
*International Sauvignon Blanc Day: 7  Link  (Note: Different than on on April 27)
Lemonade Day: 7  Link  (First Sunday)
Motorcycle Mass & Blessing of The Bikes Day: 7 (First Sunday)
*National Barrier Awareness Day: 7
Rural Life Sunday: 7 (First Sunday)
*Spring Astronomy Day: 7
*Worldwide Day of Genital Autonomy: 7  Link
World Laughter Day: 7 Link  Link  (First Sunday)

 

*Free Trade Day: 8 Link
Lag B'Omer: 8
*National Animal Disaster Preparedness Day: 8 Link
National Women's Check-up Day: 8 Link (Second Monday)
*No Socks Day: 8
*Time of Remembrance & Reconciliation for Those Who Lost Their Lives During The
Second World War: 8-9
*Student Nurse Day: 8  Link
*V E Day: 8
*World Ovarian Cancer Day: 8 Link
*World Red Cross / Red Crescent Day: 8

 

*Alphabet Magnet Day: 9  Link
*Home Front Heroes Day: 9 Link
National Golf Day: 9-10 Link
National Teacher Day: 9 (First Tuesday of the First Full Week)
*National Moscato Day: 9
*National Sleepover Day: 9 Link

 

*Clean Your Room Day: 10 Link
*Dia De La Madre: 10
Donate A Day's Wages To Charity: 10  (Second Wednesday)
*Hostess Cupcake Day: 10 Link
*International Day of Argania:  10
*National Hampster Day: 10 Link
*National Lipid Day: 10 (Dyslipidemia)  Note: Different than one on Sept. 24)
National Night Shift Workers Day: 10  (Second Wednesday)
National Third Shift Workers Day: 10  (Second Wednesday)
Receptionists Day: 10  (Second Wednesday)
School Nurse Day: 10 Link  (Always the Wednesday of School Nurse Week 9-12)
*World Lupus Day: 10

 
*Eat What You Want Day: 11
National Children's Mental Health Awareness Day: 11  (Thursday of First Full Week)
*National Foam Rolling Day: 11 Link (Massage)
*Root Canal Appreciation Day: 11 

Child Care Provider Day: 12 Link  (Friday before Mother's Day)
*International Awareness Day for Chronic Immunological and Neurological Diseases: 12  Link
Fintastic Friday: Giving Sharks A Voice: 12  (2nd Friday)
*International Nurses Day: 12 Link   Link
*Limerick Day: 12
Military Spouse Appreciation Day: 12 Link  (Friday before Mother's Day)
*National Nutty Fudge Day: 12 Link
National Public Gardens Day: 12 Link  (Friday Before Mother's Day)
National Provider Appreciation Day: 12 Link (Friday before Mother's Day)
*Native American Rights Day: 12
*Odometer Day: 12

American Indian Day: 13 Link (2nd Saturday)
Bereaved Mother's Day: 13 (2nd Saturday)
Birthmother's Day (Saturday before Mother's Day): 13 Link
*Children of Fallen Patriots Day: 13
Cornelia de Lange Syndrome Awareness Day: 13 Link (2nd Saturday)
*Crouton Day: 13
Do Dah Day: 13 Link  (2nd Saturday)
*Frog Jumping Day: 13
*Hummus Day: 13  Link
*Indigenous Arts Day: 13
International Migratory Bird Day: 13 (2nd Saturday)  Link
Letter Carrier's  Stamp Out Hunger Food Drive Day: 13 Link  (2nd Saturday)
Mother Ocean Day: 13 (Saturday Before Mother's Day)
National Archery Day: 13  Link  (Second Saturday)
National Babysitters Day: 13 (Saturday before Mother's Day)
National Dog Mom's Day: 13 (Saturday before Mother's Day)
National Miniature Golf Day: 13 (2nd Saturday)
National Windmill Day: 13 (2nd Saturday)
Stay Up All Night: 13 (2nd Saturday)
World Belly Dance Day: 13 (2nd Saturday)
World Fair Trade Day: 13 (2nd Saturday)
World Migratory Bird Day: 13 (2nd Saturday)

*Apraxia Awareness Day: 14 Link
Mother's Day: 14 Link  Link
Mother's At The Wall Day: 14 (Always Mother's Day)
*National Chicken Dance Day: 14 Link
*National Decency Day: 14 Link Link
*The Stars and Stripes Forever Day: 14
*Underground America Day: 14
*WAAC Day: 14

 

CSCMP's Supply Chain Professionals Day: 15 (3rd Monday)
*Hyperemisis Gravidarum Awareness Day: 15
*International Day of Families: 15
*International MPS Awareness Day: 15  Link
*Nakba Day: 15
*National Chocolate Chip Day: 15 Link
*National Slider Day: 15  (Food)
*Nylon Stockings Day: 15
*National Tuberous Sclerosis Day: 15  Link
*Peace Officer Memorial Day: 15 Link  Link
*Straw Hat Day: 15  Link
Supply Chain Professional Day: 15  (3rd Monday)
*World Orthodontic Health Day: Link

*Biographer's Day: 16
*Honor Our LGBT Elders' Day: 16  Link
*International Day of Light: 16  Link
*Mimosa Day: 16 (Drink)
*National BBQ Day: 16 Link
*National Piercing Day: 16
*National Sea Monkey Day: 16

EMSC (Emergency Medical Services) Day:  17 Link (3rd Wednesday)
Emergency Medical Services for Children Day: 17  Link  (Wednesday of EMS Wk)*International Day Against Homophobia, Transphobia and Biphobia: 17  Link
National Employee Health & Fitness Day: 17 Link (3rd Wednesday)
National Juice Slush Day: 17 (3rd Wednesday)  Link
*Same Sex Marriage Day: 17
*Syttende Mai: 17
Turn Beauty Inside Out Day: 17 (3rd Wednesday)
*World Hypertension Day: 17  Link
*World Telecommunications and Information Society Day: 17  Link
*World Neurofibromatosis Day (NF Day): 17  Link

 
*Buy A Musical Instrument Day: 18 Link  (Honor of The Music Man Creator)
GAAD Day (Global Accessibility Awareness Day): 18 Link  (3rd Thursday)
*HIV Vaccine Awareness Day: 18 Link
*I Love Reeses Day: 18 Link  Link
*International Museum Day: 18 Link
*Mother Whistler Day: 18
*National Speech Pathologist Day: Link
*Visit Your Relatives Day: 18

*Accounting Day: 19 Link
*Boys Club Day: 19
Endangered Species Day: 19 Link  (3rd Friday)
*Hepatitus Testing Day: 19
International Defense Transportation Day: 19 (3rd Friday)
International Virtual Assistants Day: 19  (3rd Friday)
*May Ray Day: 19
Morel Mushroom Day: 19-20 (Weekend After Mother's Day)
NASCAR Day: 19 Link  (3rd Friday) 
*National Asian & Pacific Islander HIV/AIDS Awareness Day: 19 Link
National Bike to Work Day: 19 Link   (3rd Friday) 
*National Hepatitus Testing Day: 19
National Peace Officer Memorial Day: 19 (Friday of Police Week)
National Pizza Party Day: 19  (3rd Friday)  Link
*National Scooter Day: 19
*World IBD Day: 19 Link

 

 

Armed Forces Day: 20  (3rd Saturday) 
*Eliza Doolittle Day: 20
*Everybody Draw Mohammed Day: 20 Link
International Heritage Breeds Day: 20 Link  (Saturday of 3rd Full Week)
*International Human Resources Day: 20 Link
International Learn To Swim Day: 20  (3rd Saturday)
*International Red Sneakers Day: 20  Link
Morel Mushrooms Day: 20-21 (Weekend after Mother's Day)
*National Association of Psychometrist's Day: 20 Link
*National Rescue Dog Day: 20  Link
Preakness: 20  (3rd Saturday) 
*Stop The Bleed Day: 20 Link
*Weights & Measures Day: 20
*World Autoimmune/Autoinflammatory Arthritis Day (World AiArthritis Day) 20 Link
*World Bee Day: 20 Link
World Fiddle Day: 20 Link (3rd Satuday)

 
*American Red Cross Founder's Day: 21
Bay to Breakers Race: 21 Link  Note: Oldest Footrace in America!  (3rd Sunday in May)
*End of the World or Rapture Party Day: 21 (Prediction)  Link
*I Need A Patch For That Day: 21
*International Tea Day: 21  Link
*National Waitstaff Day: 21
Ride A Unicycle Day: 21  (3rd Sunday)
Rural Life Sunday: 21 (3rd Sunday)
*Sister Maria Hummel Day: 21
Take Your Parents To The Playground (Park) Day: 21 Link (3rd Sunday)
*World Day for Cultural Diversity for Dialogue & Development: 21

 

*Canadian Immigrants Day: 22
*Harvey Milk Day: 22
*International Being You Day: 22 Link
*International Day for Biological Diversity: 22
*National Maritime Day: 22
*NF2 Awareness Day: 22 Link
*Sherlock Holmes Day: 22  Link  Link
*US Colored Troops Day: 22 
Victoria Day: 22  Link
*World Goth Day: 22 Link
*World Paloma Day: 22 Link



*Declaration of the Bab Day: 23
*Drinking With Chickens Day: 23  Link
*International Day to End Obstetric Fistula: 23
*National Best Friend-in-Law Day: 23
Neighbor Day: 23 (Sunday before Memorial Day Weekend)
*National Taffy Day: 23 Link
*World Turtle Day: 23

 

*Aviation Maintenance Technician Day: 24  Link
*Brother's Day: 24  Link
Declaration of The Bab: 24
EMS Day: 24 (Wednesday of EMS Week)  Link
*International Tiara Day: 24
*Morse Code Day: 24 (Some also observe on April 27)
*World Schizophrenia Awareness Day: 24 Link
*Yucatan Shrimp Day: 24 Link

*Cookie Monster's Birthday: 25  Link  (See also November 2)
Eat More Fruits & Vegetables Day: 25 (Thursday before Memorial Day)  Link
*National and International Missing Children's Day: 25  Link
*National Tap Dance Day: 25
*National Wine Day: 25 Link
*Nerd Pride Day or Geek Pride Day: 25 Link
*World Thyroid Day: 25  Link
Shavout: 25
*Towel Day: 25 Link

 

Don't Fry Day: 26 (Friday Before Memorial Day) Link
Heat Awareness Day: 26  Link   (Last Friday)
*National Chardonnay Day: 26 Link
National Cooler Day: 26 (Friday Before Memorial Day) Link
*National Paper Airplane Day: 26 Link
National Polka Day: 26-28  Link (Always Memorial Day weekend)
National Road Trip Day: 26  (Friday Before Memorial Day Weekend)  Link
National Title Track Day: 26 (4th Friday)
National Wig Out Day: 26 (Always Fri. before Memorial Day)
*World Lindy Hop Day: 26

Amateur Radio Military Appreciation Day (ARMAD): 27  Link Link  (Saturday of Memorial Day Weekend)
*Cellophane Tape Day: 27
*Joe Cool Day: 27 Link
Julia Pierpont Day: 27  (4th Saturday)
National Learn To Swim Day: 27  (Saturday of Week Before Memorial Day) Link

 
*Amnesty International Founders Day: 28
 Indianapolis 500: 28 (Sunday of Memorial Day Weekend) 
*Menstrual Hygiene Day: 28 Link
*National Brisket Day: 28 Link
*National Hamburger Day: 28 Link
Pentecost: 28 (7th Sunday after Easter)
Rogation Sunday or Rural Life Sunday: 28  (5th Sunday After Easter) Note: Also called Rural Life Sunday or Soil Stewardship Sunday
*Sierra Club Day: 28 Link
*Slugs Return From Capistrano Day: 28
*U.S. Border Patrol Day: 28
WhitSunday: 28 (Same as Pentecost)

*Ascension of Baha'U'llah: 29
Hamburger Day: 29 Link (Always Memorial Day)
*International Day of United Nations Peacekeepers: 29
*Learn About Composting Day: 29
Memorial Day: 29 (Observed)
*National 529 Day: 29  Link
*National Alligator Day: 29
Prayer for Peace Memorial Day: 29
*Put A Pillow On Your Fridge Day: 29 Link

*Indianapolis 500 Anniversary: 30
*Loomis Day: 30
*Memorial Day (Traditional): 30
*Mint Julep Day: 30
*National Creativity Day: 30  Link
*World MS Day (Multiple Sclerosis): 30 Link 

*National Smile Day: 31  Link
*Necrotizing Fasciitis Awareness Day:31  Link
National Senior Health & Fitness Day: 31 Link  (Last Wednesday)
*Save Your Hearing Day: 31 Link
*What You Think Upon Grows Day: 31
*World No-Tobacco Day: 31
World Otter Day: 31 (Last Wednesday)
*World Parrot Day: 31 Link