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Last updated: April 15, 2021 – 210 hashtag holidays

This list starts with the hashtag holidays by day, followed by the celebration months. There’s a little duplication because that’s the nature of made up holidays. Some also rotate year-to-year and we’re still working at identifying those. If you know a holiday that’s missing or we’ve made a mistake, please let us know!

Hashtag holidays with rotating dates are identified by the year. Official public holidays have the country and state, if state-based.

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May 1

Mother Goose Day | Save the Rhino Day | May Day | Global Love Day | World Naked Gardening Day (2021) | National Loyalty Day | National Fitness Day (2021) | Chocolate Parfait Day

May 2

Thank a Teacher Day #ThankATeacher | Fire Day | World Tuna Day | World Laughter Day | National Truffle Day | Life Insurance Day | Infertility Survival Day | National Lemonade Day

May 3

Paranormal Day | Lumpy Rug Day | World Press Freedom Day | Garden Meditation Day | Two Different Colored Shoes Day | May Day (NT – Australia) | Labour Day (Qld – Australia)

May 4

Star Wars Day #StarWarsDay (also known as May the Fourth Be With You #MayThe4thBeWithYou) | National Candied Orange Peel Day | World Asthma Day (2021) | Weather Observers Day | Bird Day | National Orange Juice Day | Thank a Teacher Day

May 5

National Hoagie Day | Cinco de Mayo | African World Heritage Day | World Portuguese Language Day | National Astronaut Day | National Cartoonist Day | National Bike to School Day

May 6

Beverage Day | No Diet Day | World Password Day (2021) | National Day of Reason

May 7

International Tuba Day | Paste Up Day | National Roast Leg of Lamb Day | Packaging Design Day | Barrier Awareness Day | National Space Day (2021)

May 8

No Socks Day | Have a Coke Day | Red Cross Day | Everywhere 4 Everyone History | International Thalassemia Day | Coconut Cream Pie Day | National Student Nurses Day | Truman Day (MS – USA)

May 9

Lost Sock Memorial Day | Mother’s Day (2021) | Europe Day | National Moscato Day | Butterscotch Brownie Day | National Sleepover Day

May 10

Receptionists Day #NationalReceptionistDay | Clean Up Your Room Day | World Lupus Day | National Lipid Day | National Shrimp Day | Women’s Check Up Day (2021) | Confederate Memorial Day (NC, SC – USA)

May 11

Eat What You Want Day | Twilight Zone Day | National Foam Rolling Day

May 12

National Limerick Day #NationalLimerickDay | International Nurses Day | National Odometer Day | National Nutty Fudge Day | Fibromyalgia Awareness Day | Eid Al-Fitr (2021)

May 13

Leprechaun Day | International Hummus Day | National Crouton Day | Frog Jumping Day | National Apple Pie Day | Fruit Cocktail Day

May 14

National Dance Like a Chicken Day | National Decency Day | Underground America Day | Buttermilk Biscuit Day

May 15

National Chocolate Chip Day | Peace Officers Memorial Day | Nylon Stocking Day | Learn to Swim Day (2021)

May 16

Wear Purple for Peace Day | Day of Living Together in Peace | International Day of Light | World Baking Day (2021) | National Barbecue Day | Love a Tree Day | Do Something Good for Your Neighbor Day

May 17

Pack Rat Day | International Day Against Homophobia and Transphobia | Cherry Cobbler Day | Graduation Tassel Day | National Walnut Day

May 18

International Museum Day | Visit Your Relatives Day | HIV Vaccine Awareness Day | Visit your Relatives Day | No Dirty Dishes Day | National Cheese Soufflé Day

May 19

World Baking Day | Frog Jumping Jubilee Day | National May Ray Day | Devil’s Food Cake Day | EMS For Children Day | National Juice Slush Day

May 20

Eliza Doolittle Day | World Metrology Day | World Bee Day | National Caesar Day | Be a Millionaire Day | National Dog Rescue Day | National Quiche Lorraine Day

May 21

National Memo Day #NationalMemoDay | National Waitresses/Waiters Day | Diversity Day | International Tea Day | Strawberries and Cream Day | Endangered Species Day (2021) | Bike to Work Day (2021)

May 22

Sherlock Holmes Day | Buy-A-Musical-Instrument Day | International Day for Biological Diversity | World Goth Day | World Paloma Day | National Craft Distiller Day | National Maritime Day | National Solitaire Day

May 23

Penny Day | World Turtle Day | National Taffy Day

May 24

Scavenger Hunt Day #NationalScavengerHuntDay | National Escargot Day | Victoria Day (Canada) | World Schizophrenia Day | Brothers Day | Yucatan Shrimp Day | Aviation Maintenance Technician Day

May 25

Geek Pride Day | Towel Day | National Tap Dance Day | National Wine Day | Missing Children’s Day | Brown Bag It Day

May 26

Dracula Day | Grey Day | Buddha Day | Blueberry Cheesecake Day | Paper Airplane Day | Senior Health Fitness Day (2021)

May 27

Cellophane Tape Day | Grape Popsicle Day

May 28

National Hamburger Day | National Brisket Day | National Road Trip Day (2021) | National Cooler Day

May 29

End of the Middle Ages Day | National Paper Clip Day | National Coq Au Vin Day

May 30

My Bucket’s Got a Hole in it Day | World Multiple Sclerosis Day | Water a Flower Day | Mint Julep Day | Confederate Memorial Day (VA – USA)

May 31

National Macaroon Day | Flight Attendant Day | World No Tobacco Day | Autonomous Vehicle Day | Speak in Complete Sentences Day | National Smile Day | Reconciliation Day (ACT – Australia) | Memorial Day (USA)

May Hashtag Holidays

Get Caught Reading Month | National Physical Fitness and Sports Month | Skin Cancer Prevention Month | Arthritis Awareness Month | Better Hearing and Speech Month | Food Allergy Action Month | Global Employee Health and Fitness Month | Global Youth Traffic Safety Month | Healthy Vision Month | Hepatitis Awareness Month | International Mediterranean Diet Month | Mental Health Month | National Asthma and Allergy Awareness Month | National Osteoporosis Month | National Physical Fitness and Sports Month | National Stroke Awareness Month | National Teen Pregnancy Prevention Month | Preeclampsia Awareness Month | Skin Cancer Prevention Month | National Asparagus Month | National Barbecue Month | National Chocolate Custard Month | National Egg Month | National Gazpacho Aficionado Month | National Hamburger Month | National Salad Month | National Salsa Month | National Strawberry Month | National Vinegar Month

Photo by Rahul Pandit on Unsplash

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Cover Photo by Dan Dumitriu on Unsplash