| May Monthly Observances |
|
| ALS Awareness Month |
| (Amyotrophic Lateral Sclerosis or Lou Gehrig's Disease) |
| Asian Pacific American Heritage Month |
| Awareness of Medical Orphans Month |
| Better Hearing & Speech Month |
| Brain Tumor Awareness Month |
| Creative Beginnings Month |
| Family Wellness Month |
| Fibromyalgia Education and Awareness Month |
| Freedom Shrine Month |
| Get Caught Reading Month |
| Gifts From The Garden Month |
| Go Fetch! Food Drive for Homeless Animals Month |
| Haitian Heritage Month |
| Heal the Children Month |
| Healthy Vision Month |
| Huntington's Disease Awareness Month |
| International Audit Month |
| International Business Image Improvement Month |
| International Victorious Woman Month |
| Jewish-American Heritage Month |
| Latino Books Month |
| Motorcycle Safety Month |
| National Allergy/Asthma Awareness Month |
| National Arthritis Month |
| National Barbeque Month |
| National Bike Month |
| National Correct Posture Month |
| National Egg Month |
| National Foster Care Month |
| National Good Car Keeping Month |
| National Hamburger Month |
| National Hepatitis Awareness Month |
| (World) Lyme Disease Awareness Month |
| National Meditation Month |
| National Mental Health Month |
| National Military Appreciation Month |
| National Moving Month |
| National Neurofibromatosis Awareness Month |
| National Older Americans Month |
| National Osteoporosis Prevention Month |
| National Photo Month |
| National Physical Fitness & Sports Month |
| National Preservation Month |
| National Salad Month |
| National Salsa Month |
| National Smile Month |
| National Stroke Awareness Month |
| National Revise Your Work Schedule Month |
| National Vinegar Month |
| Navajo Code Talkers Month |
| Personal History Month |
| Prepare to Buy A Home Month |
| React Month |
| Strike Out Strokes Month |
| Sweet Vidalia Onions Month |
| Teen Self-Esteem Month |
| Tennis Month |
| Tay-Sachs and Canavan Diseases Month |
| Ultra-violet Awareness Month |
| Women's Health Care Month |
| Young Achiever's Month |
| National Family Month (5/11 to 6/18) |
|
|
| May Weekly Observances |
|
| National Fairy Godmother Week: 1-7 |
| Tim & Tom Gullikson Week: 1-8 |
| Be Kind To Animals Week: 4-10 |
| Flexible Work Arrangement Week: 4-10 |
| Goodwill Industries Week: 4-10 |
| National Anxiety & Depression Awareness Week: 4-10 |
| National Family Week: 4-10 |
| National Hug Holiday Week: 4-10 |
| National Pet Week: 4-10 |
| National Post Card Week: 4-10 (US and England) |
| Reading is Fun Week: 4-10 |
| Astronomy Week: 5-10 |
| Intimate Apparel Market Week: 5-9 (also observed in February, August and Nov.) |
| Life Coach Recognition Week: 5-11 |
| National Wildflower Week: 5-11 |
| Update Your References Week: 5-9 |
| National Nurses Day and Week: 6-12 |
| Teacher Appreciation Week: 6-12 |
| Salute to 35+ Moms Week: 9-15 |
| National Tourism Week: 10-18 |
| National Nursing Home Week: 11-17 |
| National Police Week: 11-17 |
| Kiwanis Prayer Week: 11-17 |
| Salvation Army Week: 11-17 |
| National Transportation Week: 11-17 |
| National Women's Health Week: 11-18 |
| Children's Book Week: 12-18 |
| National Stuttering Awareness Week: 12-18 |
| National Safe Boating Week: 17-23 |
| Bread Week: 18-24 |
| National Dog Bite Prevention Week: 18-24 |
| National Effectiveness Week: 18-24 |
| National Medical Transcription Week: 18-25 |
| National New Friends, Old Friends Week: 18-24 |
| World Trade Week: 18-24 |
| National Backyard Games Week: 19-26 |
| Work At Home Moms Week:19-25 |
| Old Time Piano Playing Week: 23-26 |
| Cover the Uninsured Week: 24-31 |
| Week of Solidarity With The People of Non-Self-Governing Territories: 25-31 |
|
| May Daily Observances |
|
|
| (World) Asthma Day: 1 |
| Beltaine: 1 |
| Executive Coaching Day: 1 |
| Frequent Flyer Day: 1 |
| Law Day: 1 |
| Lei Day: 1 |
| Library Legislative Day: 1-2 |
| Loyalty Day: 1 |
| Martin Z. Mollusk Day: 1 |
| May Day: 1 |
| Mother Goose Day: 1 |
| National Day of Prayer: 1 |
| National Day of Reason: 1 |
| New Homeowner's Day: 1 |
| School Principals' Day: 1 |
| Stepmother's Day: 1 |
| No Pants Day: 2 |
| Roberts Rule of Order Day: 2 |
| Cartoonists Day: 3 |
| Dandelion Day: 3-4 |
| Free Comic Book Day: 3 |
| Garden Meditation Day: 3 |
| Kentucky Derby: 3 |
| International Pilates Day: 3 |
| Join Hands Day: 3 |
| Lumpy Rug Day: 3 |
| National Anxiety Disorders Screening Day: 3 |
| National Day to Prevent Teen Pregnancy: 3 |
| National Homebrew Day: 3 |
| National Public Radio Day: 3 |
| National Scrapbooking Day: 3 |
| World Press Freedom Day: 3 |
| Join Hands Day: 4 |
| Motorcycle Mass & Blessing of The Bikes Day: 4 |
| National Infertility Survival Day: 4 |
| Respect for Chickens Day: 4 |
| Cinco de Mayo: 5 |
| Melanoma Monday: 5 |
| Totally Chipotle Day: 5 |
| Childhood Depression Awareness Day: 6 |
| Joseph Brackett Day: 6 |
| National Teacher Day: 6 |
| No Diet Day: 6 |
| No Homework Day: 6 |
| Nurses Day: 6 |
| Great American Grump Out: 7 |
| National School Nurse Day: 7 |
| Cranmere Day: 8 |
| No Socks Day: 8 |
| Time of Remembrance & Reconciliation for Those |
| Who Lost Their Lives During the Second World War: 8-9 |
| V E Day: 8 |
| World Red Cross Day: 8 |
| Astronomy Day: 10 |
| Birthmother's Day (Saturday before Mother's Day): 10 |
| International Migratory Bird Day: 10 |
| Letter Carrier's Food Drive Day: 10 |
| Lupus Day: 10 |
| Mother Ocean Day: 10 |
| National Babysitter's Day: 10 |
| Windmill Day: 10 |
| World Fair Trade Day: 10 |
| Child Care Provider Day: 11 |
| Eat What You Want Day: 11 |
| Mother's Day: 11 |
| Pentecost or WhitSunday: 11 |
| Fibromyalgia Awareness Day: 12 |
| Limerick Day: 12 |
| Native American Rights Day: 12 |
| National Nutty Fudge Day: 12 |
| Stamp Out Hunger - NALC Food Drive: 12 |
| Library Legislative Day: 13-14 |
| National Night Shift Workers Day: 14 |
| National Third Shift Workers Day: 14 |
| Donate A Day's Wages To Charity Day: 14 |
| Receptionists Day: 14 |
| Root Canal Appreciation Day: 14 |
| Underground America Day: 14 |
| International Day of Families: 15 |
| National Chocolate Chip Day: 15 |
| Nylon Stockings Day: 15 |
| Peace Officer Memorial Day: 15 |
| Biographer's Day: 16 |
| Dulcimer Days: 16-18 |
| International Virtual Assistants Day: 16 |
| National Bike to Work Day: 16 |
| National Defense Transportation Day: 16 |
| National Pizza Party Day: 16 |
| National Sea Monkey Day: 16 |
| Armed Forces Day: 17 |
| Baby Sitter Safety Day: 17 |
| Fishing Has No Boundaries Day: 17-18 |
| Preakness Stakes: 17 |
| World Telecommunications Day: 17 |
| World Information Society Day: 17 |
| Celebrate Your Elected Officials Day: 18 |
| International Museum Day: 18 |
| NASCAR Day: 18 |
| Send An Electronic Greeting Card Day: 18 |
| Visit Your Relatives Day: 18 |
| Whistler's Mother Day: 18 |
| Eliza Doolittle Day: 20 |
| Weights & Measures Day: 20 |
| American Red Cross Founder's Day: 21 |
| National Employee Health & Fitness Day: 21 |
| Turn Beauty Inside Out Day: 21 |
| I Need A Patch For That Day: 21 |
| National Wait Staff Day: 21 |
| World Day for Culteral Diversity for Dialogue & Development: 21 |
| International Day for Biological Diversity: 22 |
| National Maritime Day: 22 |
| Declaration of the Bab Day: 23 |
| National Taffy Day: 23 |
| Brother's Day: 24 |
| International Jazz Day: 24 |
| Julia Pierpont Day: 24 |
| Plant A Letterbox Day: 24 |
| Tiara Day: 24 |
| Victoria Day: 24 (Canada) |
| National Missing Children's Day: 25 |
| National Tap Dance Day: 25 |
| Neighbor Day: 25 |
| Indianapolis 500: 25 |
| Towel Day: 25 |
| Memorial Day: 26 (Observed) |
| Prayer for Peace Memorial Day: 26 |
| National Senior Health & Fitness Day: 28 |
| Slugs Return to Capistrano Day: 28 |
| International Day of UN Peacekeepers: 29 |
| Hug Your Cat Day: 30 |
| Loomis Day: 30 |
| Memorial Day: 30( Actual) |
| World No-Tobacco Day: 31 |
