| Feast of St Joseph the Worker | |  |
| Workers' Day | |  |
| Labor Day / May Day | |  |
| Unity Day | |  |
| Loyalty Day | |  |
| Labor Day | |  |
| Maharashtra Day | |  |
| National Mother Goose Day | |  |
| National Chocolate Parfait Day | |  |
| Law Day | |  |
| School Principals’ Day | |  |
| Silver Star Service Banner Day | |  |
| National Day of Reason | |  |
| World Password Day | |  |
| National Day of Prayer | |  |
| Yom Ha'atzmaut | |  |
| Agriculture and Labor Day | |  |
| Lei Day | |  |
| May Day | |  |
| Constitution Day | |  |
| Spring and Labor Day | |  |
| Labor and Solidarity Day | |  |
| Constituent Assembly Convocation Day | |  |
| Labor day | |  |
| May 1st | |  |
| Sturge-Weber Syndrome Awareness | |  |
| National Hamburger Month | |  |
| National Executive Coaching Day | |  |
| National Purebred Dog Day | |  |
| Global Love Day | |  |
| Lupus Awareness Month | |  |
| National Blood Pressure Education Month | |  |
| National Asparagus Month | |  |
| Skin Cancer Awareness Month | |  |
| National Inventor’s Month | |  |
| National Photography Month | |  |
| International Drum Month | |  |
| National Bike Month | |  |
| National Deck Safety Month | |  |
| National Military Appreciation Month | |  |
| National Moving Month | |  |
| Celiac Disease Awareness Month | |  |
| National Get Caught Reading Month | |  |
| National Stroke Awareness Month | |  |
| National Mental Health Awareness Month | |  |
| Motorcycle Safety Awareness Month | |  |
| National Brain Cancer And Brain Tumor Awareness Month | |  |
| National Gardening Week | |  |
| Therapeutic Massage Awareness Day | |  |
| National Egg Month | |  |
| National Salsa Month | |  |
| National Salad Month | |  |
| National Barbecue Month | |  |
| National Strawberry Month | |  |
| National Cystic Fibrosis Awareness Month | |  |
| Correct Your Posture Month | |  |
| National Chamber Music Month | |  |
| National Mediterranean Diet Month | |  |
| Older Americans Month | |  |
| Better Speech And Language Month | |  |
| National Foster Care Month | |  |
| National Water Safety Month | |  |
| National Wildfire Awareness Month | |  |
| American Cheese Month | |  |
| Date Your Mate Month | |  |
| New Home Owners Day | |  |
| Day of Madrid | |  |
| National Truffle Day | |  |
| National Life Insurance Day | |  |
| National Space Day | |  |
| School Lunch Hero Day | |  |
| No Pants Day | |  |
| World Tuna Day | |  |
| Spring and Labor Day Holiday | |  |
| Labor Day observed | |  |
| Labor Day / May Day (2nd Day) | |  |
| Day of the Flag | |  |
| Labor Day (2nd Day) | |  |
| Baby Day | |  |
| National Brothers And Sisters Day | |  |
| International Tuba Day | |  |
| Constitution Memorial Day | |  |
| Cross Day | |  |
| World Press Freedom Day | |  |
| Constitution Day | |  |
| National Lumpy Rug Day | |  |
| National Garden Meditation Day | |  |
| National Specially-Able Pets Day | |  |
| National Two Different Colored Shoes Day | |  |
| National Paranormal Day | |  |
| National Chocolate Custard Day | |  |
| National Raspberry Pop Over Day | |  |
| National Textiles Day | |  |
| National Fitness Day | |  |
| National Scrapbook Day | |  |
| National Homebrew Day | |  |
| Join Hands Day | |  |
| National Bombshells’ Day | |  |
| National Start Seeing Monarchs Day | |  |
| Free Comic Book Day | |  |
| National Lemonade Day | |  |
| National Explosive Ordnance Disposal (EOD) Day | |  |
| Herb Day | |  |
| Astronomy Day | |  |
| Beer Pong Day | |  |
| Wildfire Community Preparedness Day | |  |
| Greenery Day | |  |
| Literary Day | |  |
| Anniversary of the Decease of M. R. ŝtefánika | |  |
| Independence Restoration Day | |  |
| Youth Day | |  |
| Cassinga Day | |  |
| Kent State Shootings Remembrance | |  |
| Rhode Island Independence Day | |  |
| National Star Wars Day | |  |
| National Weather Observers Day | |  |
| National Renewal Day | |  |
| National Orange Juice Day | |  |
| National Candied Orange Peel Day | |  |
| National Infertility Survival Day | |  |
| Special working day | | |
| Saint Florian's Day | |  |
| Mother's Day | |  |
| Remembrance Day | |  |
| Coronation Day | |  |
| 45 Day | |  |
| World Laughter Day | |  |
| International Firefighters’ Day | |  |
| National Pet Week | |  |
| Senior Citizens Day | |  |
| Constitution Day of the Kyrgyz Republic | |  |
| Liberation Day | |  |
| Cinco de Mayo | |  |
| Freedom Day | |  |
| National Astronaut Day | |  |
| National Cartoonists Day | |  |
| National Silence the Shame Day | |  |
| National Totally Chipotle Day | |  |
| National Hoagie Day | |  |
| National Melanoma Monday | |  |
| Labor Day | |  |
| Labor Day / May Day | |  |
| Arrival Day | |  |
| May Day | |  |
| Labor Day | |  |
| Buddha's Birthday | |  |
| Children's Day | |  |
| Liberation Day | |  |
| Early May Bank Holiday | |  |
| Coronation Day | |  |
| Nail Day | |  |
| Revenge Of The Fifth | |  |
| International Midwives’ Day | |  |
| Hug A Shed And Take A Selfie Day | |  |
| Martyrs' Day | |  |
| Day of Gorans | |  |
| National Nurses Day | |  |
| International No Diet Day | |  |
| National Beverage Day | |  |
| National Crepe Suzette Day | |  |
| National Foster Care Day | |  |
| St. George's Day | |  |
| National Nurses Week | |  |
| World Asthma Day | |  |
| No Homework Day | |  |
| National Tourist Appreciation Day | |  |
| Soldiers' Day | |  |
| Defender of the Fatherland Day | |  |
| National Packaging Design Day | |  |
| National Paste-Up Day | |  |
| National Barrier Awareness Day | |  |
| National Roast Leg of Lamb Day | |  |
| National Teacher Appreciation Day | |  |
| National School Nurse Day | |  |
| Pahang State Holiday | |  |
| National Skilled Trades Day | |  |
| National Cosmopolitan Day | |  |
| National Tourism Day | |  |
| Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War | |  |
| Parents' Day | |  |
| World Ovarian Cancer Day | |  |
| Day of liberation | |  |
| Truman Day | |  |
| National Coconut Cream Pie Day | |  |
| National Have A Coke Day | |  |
| Victory Day | |  |
| Victory Day | | |
| No Socks Day | |  |
| World Donkey Day | |  |
| Iris Day | |  |
| Free Trade Day | |  |
| Europe Day | |  |
| National Lost Sock Memorial Day | |  |
| National Moscato Day | |  |
| National Butterscotch Brownie Day | |  |
| National Sleepover Day | |  |
| National Provider Appreciation Day | |  |
| Confederate Memorial Day observed | | |
| Military Spouse Appreciation Day | |  |
| Victory Day | | |
| Victory Day | |  |
| Remembrance Day | |  |
| Liberation Day (except Alderney and Sark) | |  |
| Liberation Day | |  |
| Europe Day | | |
| National Public Gardens Day | |  |
| Constitution Day | |  |
| National Clean Up Your Room Day | |  |
| National Lipid Day | |  |
| National Shrimp Day | |  |
| National Birth Mother’s Day | |  |
| National Babysitter’s Day | |  |
| National Dog Mom’s Day | |  |
| National Train Day | |  |
| National Archery Day | |  |
| Cornelia De Lange Syndrome Awareness Day | |  |
| Stamp Out Hunger Food Drive Day | |  |
| Mother's Day | |  |
| Confederate Memorial Day | |  |
| World Migratory Bird Day | |  |
| Liberation Day (only Sark) | |  |
| Monarchy Day | |  |
| World Lupus Day | |  |
| National Miniature Golf Day | |  |
| International Day Of Argania | |  |
| World Belly Dance Day | |  |
| Mother Ocean Day | |  |
| National Windmill Day | |  |
| One Day Without Shoes Day | |  |
| World Buckfast Day | |  |
| National Eat What You Want Day | |  |
| National Foam Rolling Day | |  |
| National Twilight Zone Day | |  |
| Mother's Day | |  |
| Day of the National Emblem and Flag of Belarus | |  |
| Father's Day | |  |
| World Ego Awareness Day | |  |
| International Nurses Day | |  |
| National Limerick Day | |  |
| National Odometer Day | |  |
| National Nutty Fudge Day | |  |
| National Fibromyalgia Awareness Day | |  |
| National Women’s Checkup Day | |  |
| Mother's Day | |  |
| Gospel Day | |  |
| St. Andrew's Day | |  |
| Wesak - Buddha Day | |  |
| Buddha Purnima | |  |
| Buddha Purnima/Vesak | |  |
| Vesak Full Moon Poya Day | |  |
| International Day Of Plant Health | |  |
| National Crouton Day | |  |
| National Frog Jumping Day | |  |
| National Apple Pie Day | |  |
| National Fruit Cocktail Day | |  |
| World Cocktail Day | |  |
| International Hummus Day | |  |
| Leprechaun Day | |  |
| Top Gun Day | |  |
| Independence Day | |  |
| National Unification Day | |  |
| Kamuzu Day | |  |
| National Decency Day | |  |
| National Dance Like a Chicken Day | |  |
| National Buttermilk Biscuit Day | |  |
| National Receptionists Day | |  |
| National Third Shift Workers Day | |  |
| Donate A Day’s Wages To Charity Day | |  |
| National Root Canal Appreciation Day | |  |
| World Facilities Management Day | |  |
| Independence Day Holiday | |  |
| Teachers' Day | |  |
| Family Day | |  |
| International Day of Families | |  |
| Peace Officers Memorial Day | |  |
| Feast Day of St Isidore | |  |
| National Chocolate Chip Day | |  |
| National Nylon Stocking Day | |  |
| Bring Flowers To Someone Day | |  |
| National Notebook Day | |  |
| National Straw Hat Day | |  |
| National Police Week | |  |
| Global Accessibility Awareness Day | |  |
| International Vascular Birthmarks Awareness Day | |  |
| SPLA Day | |  |
| Honor Our LGBT Elders Day | |  |
| National Do Something Good for Your Neighbor Day | |  |
| National Love a Tree Day | |  |
| National Piercing Day | |  |
| National Sea Monkey Day | |  |
| National Biographer’s Day | |  |
| National Coquilles Saint Jacques Day | |  |
| Bike to Work Day | |  |
| National Endangered Species Day | |  |
| National Pizza Party Day | |  |
| NASCAR Day | |  |
| Lag B'Omer | |  |
| National Defense Transportation Day | |  |
| Great Prayer Day | |  |
| Horse Rescue Day | |  |
| National Barbecue Day | |  |
| National Waiters Day | |  |
| Drawing Day | |  |
| International Day Of Light | |  |
| International Virtual Assistants Day | |  |
| Shades Day | |  |
| International Day Of Living Together In Peace | |  |
| World Telecommunication and Information Society Day | |  |
| Constitution Day | |  |
| 17 May Constitution Day (1814) | |  |
| Galicia Literature Day | |  |
| Liberation Day | |  |
| National Pack Rat Day | |  |
| National Cherry Cobbler Day | |  |
| National Graduation Tassel Day | |  |
| National Walnut Day | |  |
| National Learn to Swim Day | |  |
| Armed Forces Day | |  |
| Europe Day | |  |
| World Whisky Day | |  |
| National Work From Home Day | |  |
| World Fiddle Day | |  |
| National Pinot Grigio Day | |  |
| World Neurofibromatosis Awareness Day | |  |
| Plant A Lemon Tree Day | |  |
| Day of Revival, Unity, and the Poetry of Magtymguly | |  |
| Flag Day/University Day | |  |
| International Museum Day | |  |
| Battle of Las Piedras | |  |
| National HIV Vaccine Awareness Day | |  |
| National Visit Your Relatives Day | |  |
| National No Dirty Dishes Day | |  |
| National Cheese Soufflé Day | |  |
| Take Your Parents To The Playground Day | |  |
| World Baking Day | |  |
| International Heritage Breeds Week | |  |
| Commemoration of Atatürk, Youth and Sports Day | |  |
| National Devil’s Food Cake Day | |  |
| Victoria Day | |  |
| National Patriots' Day | |  |
| Discovery Day | |  |
| National May Ray Day | |  |
| Italian Beef Week | |  |
| Restoration of Independence Day | |  |
| National Day | |  |
| National Be a Millionaire Day | |  |
| National Pick Strawberries Day | |  |
| National Rescue Dog Day | |  |
| National Quiche Lorraine Day | |  |
| World Autoimmune / Autoinflammatory Arthritis Day | |  |
| Day of Remembrance | |  |
| World Bee Day | |  |
| Weights & Measures Day | |  |
| World Day for Cultural Diversity for Dialogue and Development | |  |
| Navy Day | |  |
| Independence Day | |  |
| Talk Like Yoda Day | |  |
| Saint Helena's Day | |  |
| National American Red Cross Founder’s Day | |  |
| National Waitstaff Day | |  |
| National Strawberries and Cream Day | |  |
| National Memo Day | |  |
| Emergency Medical Services for Children Day | |  |
| International Tea Day | |  |
| I Need A Patch For That Day | |  |
| World Meditation Day | |  |
| National Numeracy Day | |  |
| Rapture Party Day | |  |
| International Customer Support Day | |  |
| International Day for Biological Diversity | |  |
| Unity Day | |  |
| Independence Day (2nd Day) | |  |
| National Maritime Day | |  |
| National Craft Distillery Day | |  |
| National Solitaire Day | |  |
| National Buy a Musical Instrument Day | |  |
| National Vanilla Pudding Day | |  |
| Harvey Milk Day | |  |
| World Goth Day | |  |
| Sherlock Holmes Day | |  |
| International Day to End Obstetric Fistula | |  |
| Labor Day / May Day | |  |
| Constitution Day | |  |
| World Turtle Day | |  |
| National Lucky Penny Day | |  |
| National Taffy Day | |  |
| National Don’t Fry Day | |  |
| Vlach’s National Day (for Vlach community) | |  |
| National Title Track Day | |  |
| Culture and Literacy Day | |  |
| The Battle of Pichincha | |  |
| Independence Day | |  |
| National Aviation Maintenance Technician Day | |  |
| Brother’s Day | |  |
| National Scavenger Hunt Day | |  |
| National Escargot Day | |  |
| Commonwealth Day | |  |
| Saints Cyril and Methodius' Day | |  |
| International Tiara Day | |  |
| National Asparagus Day | |  |
| National Day/May 1810 Revolution | |  |
| Independence Day | |  |
| Liberation and Resistance Day | |  |
| Sing Out Day | |  |
| Towel Day | |  |
| National Missing Children's Day | |  |
| National Wine Day | |  |
| National Tap Dance Day | |  |
| National Brown-Bag It Day | |  |
| Mother's Day | |  |
| Carpet Day | |  |
| Dniester Day | |  |
| Cultural Workers and Folk Artists Day | |  |
| Kiev Day | |  |
| Africa Day | |  |
| Geek Pride Day | |  |
| Independence Day | |  |
| Independence Day | |  |
| National Sorry Day | |  |
| World Lindy Hop Day | |  |
| National Blueberry Cheesecake Day | |  |
| Spring Bank Holiday | |  |
| Day off for Commonwealth Day | |  |
| Memorial Day | |  |
| Jefferson Davis' Birthday | |  |
| Yom Yerushalayim (Jerusalem Day) | |  |
| Late May Bank Holiday | |  |
| Mother's Day | |  |
| Africa Day | |  |
| Savitri Puja | |  |
| National Paper Airplane Day | |  |
| World Dracula Day | |  |
| Sun Screen Day | |  |
| National Cellophane Tape Day | |  |
| National Grape Popsicle Day | |  |
| Mother's Day | |  |
| Children's Day | |  |
| Republic Day | |  |
| Hamburger Day | |  |
| Derg Downfall Day | |  |
| National Brisket Day | |  |
| National Senior Health & Fitness Day | |  |
| National Flip Flop Day | |  |
| Menstrual Hygiene Day | |  |
| Amnesty International Day | |  |
| International Day of United Nations Peacekeepers | |  |
| Put a Pillow on Your Fridge Day | |  |
| National Paperclip Day | |  |
| National Coq Au Vin Day | |  |
| Ascension Day | |  |
| Father's Day | |  |
| Orthodox Ascension Day | |  |
| National Biscuit Day | |  |
| International Everest Day | |  |
| Learn About Composting Day | |  |
| Statehood Day | |  |
| Anguilla Day | |  |
| Day of the Canary Islands | |  |
| National Creativity Day | |  |
| National Water a Flower Day | |  |
| National Hole In My Bucket Day | |  |
| National Mint Julep Day | |  |
| Loomis Day | |  |
| National Heat Awareness Day | |  |
| Mother's Day | |  |
| Indian Arrival Day | |  |
| National Heroes Day | |  |
| Bermuda Day | |  |
| Harvest Festival | |  |
| Martyrdom of Guru Arjan Dev Sahib | |  |
| World No Tobacco Day | |  |
| Royal Brunei Armed Forces Day | |  |
| Day of Castile-La Mancha | |  |
| Autonomous Vehicle Day | |  |
| National Save Your Hearing Day | |  |
| National Speak in Sentences Day | |  |
| National Macaroon Day | |  |
| National Smile Day | |  |
| Necrotizing Fasciitis Awareness Day | |  |
| Dragon Boat Festival | |  |
| Harvest Festival Day 2 | |  |
| Web Designer Day | |  |