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- Alcohol, Tobacco & Drugs
- Animals, Fish, Insects & Birds
- Anniversaries
- Australia
- Books
- Brazil & S.America
- Buddhism
Category
- Afghanistan, AF
- Aland Island, AX
- Albania, AL
- Algeria, DZ
- American, Samoa, AS
- Andarra, AD
- Angola, AO
- Anguilla, Al
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Today is: October 18
Beard Day (No)
Birth of the Bab (1819)
Chocolate Cupcake Day
Fall Festival of Leaves, Ross County (US-OH)
Independence Day Holiday, (AZ)(1991)
Mammography Day, Ntl.
Menopause Day, World
Missouri Day Festival and High School Band Competition (US-MO)
Opossum Day, Ntl. (CA)
Person's Day (CA)(1929)
Saint Luke Feast Day
Squash Day, World
Anti-Poverty Week, (AU)
Baking Week, Ntl. (UK)
Bone and Joint Action Week, Ntl.
Case Management Week, Ntl.
Coffee Week, (UK)
Earth Science Week
Felabration (NG)
Food Bank Week, Ntl.
Food and Drug Interaction Education Week
Foot Health Week (AU)
Healthcare Central Service and Sterile Processing Week
Infection Prevention Week, Intl.
MassKara Festival (PH)
Newspaper Week (JP)
Nutrition Week (AU)
OCD Awareness Week, Intl.
Pet Peeve Week, Ntl.
Recycle Now Week (UK)
Recycle Week, Ntl. (UK)
School Safety Week, Ntl (CA)
Storytelling Festival, Scottish Intl. (UK)
Sukkot (J)
Take Your Medicine Week, America
Urban Wildlife Week, Intl.
Veterans' Health Week (AU)
Wildlife Refuge Week, Ntl.
ADHD Awareness Month
Adopt-a-Dog Month, (AHA)
Adopt-a-Shelter Dog Month
Advertising, Co-op Advertising Awareness Month
Animal Safety and Protection Month, Ntl.
Antidepressant Death Awareness Month
Anxiety and Depression Awareness Month (AU)
Apple Month, Ntl.
Applejack Month
AquaTober
Architecture Month, Archtober
Arts and Humanities Month, Ntl.
Autism Awareness Month (CA)
Bake and Decorate Month, Ntl.
Bat Appreciation Month
Battery Safety Month (Auto)
Bi-national Health Week (US/CA/MX-varies locally)
Big Draw, The
Bilingual Child Month, Celebrating the
Black History Month (UK)
Black Speculative Fiction Month
Blind Month, National Meet the
Blindness Awareness Month
Book Month, Ntl.
Breast Cancer Awareness Month, Ntl.
Bullying Month, Stop, Ntl.
Bullying Prevention Month, Ntl.
Caffeine Addiction Recovery Month
Car Care Month, Ntl. Fall
Caramel Month, Ntl.
Celiac Awareness Month (US)
Cheese Month, American
Chili Month, Ntl.
Chiropractic Health Month, Ntl.
Church Library Month
Church Safety and Security Month, Ntl.
City, Urban October
Class Reunion Month
Clergy Appreciation Month
Co-op Awareness Month
Collegiate Alcohol Awareness Month, Ntl.
Company Culture Month, Global
Computer Learning Month
Contact Lens Safety Month
Cookie Month
Country Ham Month
Country Music Month
Crime Prevention Month, Ntl.
Critical Illness Awareness Month
Cybersecurity Month, Ntl.
Danger Run (US-KY, IN, IL)
Danger Run (US-KY, IN, IL)
Dental Hygiene Month, Ntl.
Depression Education and Awareness Month
Dessert Month, Ntl.
Disability Employment Awareness Month
Diversity Awareness Month, Global
Domestic Violence Awareness Month
Down Syndrome Month, Ntl.
Dyslexia Awareness Month
Eat Better—Eat Together Month
Eczema Awareness Month
Emotional Intelligence Awareness Month
Energy Action Month, Ntl.
Ergonomics Month, Ntl.
Eye Injury Prevention Month
Fair Trade Month
Family History Month
Festival of Penha (BR-RJ)
Filipino American History Month (1587)
Financial Planning Month
Freethought, Month of, Ntl.
Gain the Inside Advantage Month, Ntl.
Gay and Lesbian History Month (1979)
German-American Heritage Month (1683)
Girls Night In (AU)
Go Sober Month (UK)
Golf Month, Australia
Great Cycle Challenge (AU)
Halloween Safety Month
Head Start Awareness Month
Health Literacy Month
Healthy Lung Month
Healthy Workplace Month (CA)
Hearing, Audiology Awareness Month, Ntl.
Hemophilia, Bleeding Disorders Month, Ntl. (AU)
Hog-out Month (US-TX)
Home Eye Safety Month
Indigenous Peoples Month, Ntl. (PH)
Islamic History Month (CA)
Italian-American Heritage Month (1492)
Kartika (H)
Katik (S)
Kitchen and Bath Month, Ntl.
Learning Disabilities Month, Ntl. (CA/US)
Learning and Development Month, Ntl.
Liver Awareness Month, Ntl.
Long Term Care Planning Month
Lupus Awareness Month (UK)
Medical Librarians Month, Ntl.
Medicine Abuse Awareness, Ntl.
Menopause Month, World
Museums and Galleries Month (PH)
Muslim American Heritage Month (US)
National Sausage Month
Non-GMO Month, Ntl.
Organize Your Medical Information Month
Orthodontic Health Month, Ntl.
Pasta Month, Ntl.
Pedestrian Safety Month
Pescatarian Month, Ntl.
Pet Wellness Awareness Month, Ntl.
Pharmacist Month, American
Photographer Appreciation Month
Physical Therapy Month, Ntl.
Pickled Peppers Month
Pink Ribbon Breakfast (AU)
Pit Bull Awareness Month, Ntl.
Pituitary Awareness Month (UK)
Pizza Month, Ntl. (1984)
Polio Awareness Month, (CA/AU)
Polish-American Heritage Month
Popcorn Poppin' Month, Ntl.
Positive Attitude Month
Prenatal-onset GBS Disease Recognition Month
Pretzel Month, Ntl.
Principal's Month, Ntl.
Protect Your Hearing Month, Ntl.
Rabi al-Thani (M)
Reading Group Month, Ntl. (1917)
Rett Syndrome Awareness Month
Riyadh Season 2024 (SA)
Roller Skating Month, Ntl.
STEM Mentoring Month
Sarcastic Awareness Month
School Libraries Month, Intl.
Seafood Month
Seed Gathering Seasons (UK)
Senior's Month (AU-QLD)
Sensory Awareness Month, Ntl.
Shoctober - Defibrillator National Awareness Month (AU)
Spina Bifida Awareness Month, Ntl.
Spinach Lovers Month
Spinal Health Month, Ntl.
Squirrel Awareness and Appreciation Month
Stamp Collecting Month, Ntl
Stop America's Violence Everywhere (SAVE) Month
Substance Abuse Preservation Month, Ntl.
Sudden Infant Death Syndrome (SIDS) Awareness Month
Sunday School Teacher Appreciation Month
Teentober
Tishrei (J)
Turner Prize Exhibition (UK)
U.S.-Mexico Border Health Month
Ultrasound Awareness Month
Unblocktober (UK)
Unblocktober (UK)
Vegetarian Month
Walk To School Month, Intl.
Window Covering Safety Month, Ntl.
Winter Weather Preparedness Weeks (Varies by Location)
Wishbones for Pets (US/CA)
Women's History Month (CA)
Women's Small Business Month
Work and Family Month, Ntl.
Workplace Politics Awareness Month
Youth Justice Action Month, Ntl.
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About National Mole Day
United States
Ends: Oct 23, 2025
DESCRIPTION:
Mole Day brings awareness to a numerical equation. Celebrated by chemists, chemistry students, and science enthusiasts, it commemorates Avogadro's Number (6.02 x 10 to the 23rd power), a basic measuring unit in chemistry. Hence, the date and the exact time of celebration: 6:02 10/23 in the American style of writing dates.
The date also falls during National Chemistry Week, an annual event that unites the American Chemical Society, businesses, schools, and individuals in communicating the importance of chemistry in everyday life.
Avogadro's Number defines the quantity of particles (atoms or molecules) in one mole of a substance. A Mole is one of the seven base International System of Units (SI) measurements.
Mole Day in schools and universities motivates students' interest in chemistry; various activities, games, and competitions are organized that explore chemistry and moles.
Annual awards on Mole Day include the George Hague Memorial Travel Award and the Mole of the Year Award. Details on applications and requirements are available on the National Mole Day Foundation website.
NMDF was created on May 15, 1991, by Maurice Oehler, a former high school chemistry teacher from Prairie du Chien, Wisconsin.
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