Holidays and Observances
Alphabetical Listing of I Holidays

Below, you can find a Holidays and Observances Alphabetical Listing of US Holidays and World Holidays and Observances that start with I.  We are still adding names to the list, so more information will be coming. 

After we complete the summary pages on the site, we will start working on a detailed page(s) for each Holidays and Observance. Once a page is completed for each Holiday or Observance, it will be linked up below, as well as it's related Daily Holidays page. (that should keep us busy for the next 5 years or so!!)

Search for Holidays Alphabetically:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X-Y-Z


I

  • I Forgot Day - July 2
  • I Love Horses Day - July 15
  • I Love Lucy Day - October 15
  • I Love Reese's Day - May 18
  • I Love to Write Day - November 15
  • I Want You to be Happy Day - March 3
  • IBM PC Day - August 12
  • Ice Cream and Violins Day - December 13
  • Ice Cream for Breakfast Day - February 4, 2017 (First Saturday in February)
  • Idaho Human Rights Day - January 16, 2017 (State Holiday in Idaho on the Third Monday in January)
  • Ides of March - March 15
  • Iditarod Race - Starts March 4, 2017 - Awards Banquet on March 19, 2017
  • IEEE Global Engineering the Future Day - May 13
  • If Pets had Thumbs Day - March 3
  • Imbolic - February 2 (Pagan)
  • Impossible Astronaut Day - April 23
  • Improve Your Office Day - October 4
  • I'm Not Going to Take It Anymore Day - January 7
  • In God We Trust Day - April 22
  • Inauguration Day - January 20 (State Holiday - DC, LA, MO, VA)
  • Income Tax Pay Day - April 17, 2017
  • Inconvenience Yourself Day - February 22, 2017 (Fourth Wednesday in February)
  • Incredible Kid Day - March 16, 2017
  • Independence Day (Fourth of July) - July 4
  • Independence From Meat Day - July 4
  • India Pale Ale Beer Day - August 3, 2017 (First Thursday in August)
  • Indiana Flower and Patio Show - March 11-19, 2017
  • Indianapolis 500 - May 28, 2017 (Sunday of Memorial Day Weekend)
  • Indivisible Day - July 4
  • Industrial Workers of the World  Day - June 27
  • Infants Immunization Week - Fourth Week of April
  • Infection Control Week - Third Week of October
  • Information Overload Day - October 19, 2016 (Third Wednesday in October)
  • Informed Woman Month - Entire Month of April
  • Ingersoll Day - August 11
  • Innergize Day - September 23, 2016 (Day after the Autumn Equinox which falls on September 22, 2016)
  • Innovation Day - February 16
  • Inspire Your Heart with Art Day - January 31
  • Insurance Awareness Day - June 28
  • Inter-American Water Day - October 1, 2016 (First Saturday in October)
  • Intergalactic Star Wars Day - May 4
  • Intergeneration Day - October 2, 2016 (First Sunday in October)
  • Intergeneration Month - Entire Month of September
  • International Accounting Day - November 10
  • International African Diaspora Day - October 2, 2016 (First Sunday in October)
  • International African Penguin Awareness Day - October 13
  • International Air Ambulance Week - September 17-25
  • International Alopecia Month For Women - Entire Month of July
  • International Amateur Radio Day - April 18
  • International Amateur Radio Month - Entire Month of April
  • International Angelman Day - February 15
  • International Answer the Telephone Like Buddy the Elf Day - December 18
  • International Anti-Corruption Day - December 9
  • International Artists Day - October 25
  • International Ask a Question Day - March 14
  • International Assistance Dog Week - August 6-12, 2016 (Starts on 7First Sunday in August)
  • International Astrology Day - March 20, 2016 (usually either March 20 or March 21 - falls on the same day as the Northward Equinox -(Spring equinox in the Northern hemisphere, Fall equinox in the Southern hemisphere).
  • International Augmentative & Alternative Communication (AAC) - Entire Month of October
  • International Aura Awareness Day - November 26, 2016 (Fourth Saturday in November)
  • International Baby Lost Mother's Day - May 4, 2017
  • International Bacon Day - September 3, 2016 (Saturday before Labor Day which falls on September 5, 2016)
  • International Bagpipe Day - March 10
  • International Banana Festival - September 21
  • International Bandanna Day - October 28, 2016 (Last Friday in October)
  • International Bat Appreciation Day - April 17
  • International Bat Night(s) - August 25-27, 2017 (Last Full Weekend in August)
  • International Beaver Day - April 7
  • International Beer Day - August 4, 2017 (First Friday in August)
  • International Bereaved Mothers Day - May 7, 2017 (First Sunday in May)
  • International Biodiesel Day - August 10
  • International Blondie and Deborah Harry Month - Entire Month of July
  • International Body Piercing Day - June 28
  • International Book Giving Day - February 14
  • International Boost Self Esteem Month - Entire Month of February
  • International Brain Awareness Week - March 13-19, 2017
  • International Brain Teaser Month - Entire Month of January
  • International Building Safety Week - May 7-13, 2017 (First Full Week in May)
  • International Business Image Improvement Month - Entire Month of May
  • International Buy a Priest a Beer Day - September 9
  • International Cachaca Day - June 12
  • International Cat Day - August 8
  • International Celebrate Bi Sexuality Day - September 23
  • International Change Your Stars Month - Entire Month of January
  • International Cheetah Day - December 4
  • International Cherry Pit Spitting Day - July 1, 2017 (First Saturday in July)
  • International Chicken Wing Day - July 1, 2017
  • International Child-Centered Divorce Awareness Month - Entire Month of January
  • International Childhood Cancer Awareness Day - February 15
  • International Childhood Cancer Awareness Month - Entire Month of June
  • International Children's Book Day - April 2
  • International Chocolate Day - September 13
  • International Circus Festival of Monte Carlo - January 19-29, 2017 (Monaco)
  • International Civil Aviation Day - December 7
  • International Civility Awareness Month - Entire Month of May
  • International Clean Hands Week - September 18-24, 2016 (Third Full Week of September)
  • International Clients Day - March 19
  • International Clitoris Awareness Week - May 7-13, 2017 (First Full Week in May)
  • International Clothesline Week - June 3-10, 2017 (starts on the first Saturday in June
  • International Clown Week - August 1-7
  • International Coaching Week - May 15-21, 2017
  • International Coastal Cleanup Day - September 17, 2016 (Third Saturday)
  • International Coffee Day - September 29
  • International Computer Security Day - November 30
  • International Condom Day - February 13
  • International Conscientious Objector Day - May 15
  • International COPD Awareness Month - Entire Month of November
  • International Country Music Day - September 17
  • International Creativity and Innovation Day - April 13
  • International Creativity Month - Entire Month of January
  • International Credit Union Day - October 20, 2016 (Third Thursday in October)
  • International Customer Loyalty Month - Entire Month of April
  • International Customs Day - January 26
  • International Dalek Remembrance Day - December 21
  • International Dance Day - April 29
  • International Dark Sky Week - April 10-14, 2017
  • International Day Against DRM - May 3, 2017
  • International Day Against Drug Abuse & Illicit Trafficking - June 26
  • International Day Against Homophobia and Transphobia - May 17
  • International Day Against Nuclear Tests - August 29
  • International Day for Biological Diversity - May 22
  • International Day for Disaster Reduction - October 13
  • International Day for Failure - October 13
  • International Day for Mine Awareness and Assistance in Mine Action - April 4
  • International Day for Monuments and Sites - April 18
  • International Day for Natural Disaster Reduction - October 10
  • International Day for Preventing the Exploitation of the Environment in War and Armed Conflict - November 6
  • International Day for the Abolition of Slavery - December 2
  • International Day for the Elimination of Racial Discrimination - March 21
  • International Day for the Elimination of Violence Against Women - November 25
  • International Day for the Eradication of Poverty - October 17
  • International Day for the Preservation of the Ozone Layer - September 16
  • International Day for the Remembrance of the Slave Trade & its Abolition - August 23
  • International Day for the Right to the Truth Concerning Gross Human Rights Violations and for the Dignity of Victims - March 24
  • International Day for Tolerance - November 16
  • International Day of Action for Elephants in Zoos - June 8
  • International Day of Black Women in the Arts - February 7
  • International Day of Charity - September 5
  • International Day of Commemoration in Memory of the Victims of the Holocaust - January 27
  • International Day of Cooperatives - July 1, 2017 (First Saturday in July)
  • International Day of Democracy - September 15
  • International Day of Families - May 15
  • International Day of Forests and the Tree - March 21
  • International Day of Friendship - July 30
  • International Day of Happiness - March 20
  • International Day of Human Space flight - April 12
  • International Day of Innocent Children Victims of Aggression - June 4
  • International Day of Listening - September 21, 2017 
  • International Day of No Prostitution - October 5
  • International Day of Non-Violence - October 2
  • International Day of Nowruz - March 21
  • International Day of Older Persons - October 1
  • International Day of Peace - September 21
  • International Day of Persons with Disabilities - December 3
  • International Day of Radiant Peace - September 22
  • International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade - March 25
  • International Day of Rural Women - October 15
  • International Day of Solidarity with Detained and Missing Staff Members - March 25
  • International Day of Solidarity with the Palestinian People - November 29
  • International Day of Sport for Development and Peace - April 6
  • International Day of the African Child - June 16
  • International Day of the Deaf - September 25, 2016 (Last Sunday in September)
  • International Day of the Girl Child - October 11
  • International Day of the Seal - March 22
  • International Day of the Unborn Child - March 25
  • International Day of the Victims of Enforced Disappearances - August 30
  • International Day of the World's Indigenous People - August 9
  • International Day of United Nations Peacekeepers - May 29
  • International Day of Zero Tolerance to Female Genital Mutilation - February 6
  • International Deaf Awareness Week - September 18-24, 2016 (Last Whole Week in September from Sunday - Saturday)
  • International DIS Awareness Month - Entire Month of December
  • International Dog Biscuit Appreciation Day - February 23
  • International Dot Day - September 15
  • International Drive Your Studebaker Day - September 10, 2016 (Second Saturday in September)
  • International Drum (Percussion) Month - Entire Month of November
  • International Dyslexia Association Reading Week - October 26-29, 2016
  • International Ear Care Day - March 3, 2016
  • International Earth Day - March 20
  • International Eat an Apple Day - September 17, 2016 (Third Saturday in September)
  • International Enthusiasm Week - September 1-7
  • International Expect Success Month - Entire Month of February
  • International Face & Body Art Day - February 1
  • International Fairy Day - June 24
  • International Fanny Pack Day - March 11, 2017 (Second Saturday in March)
  • International Festival of Owls - March 3-5, 2017
  • International Fetish Day - January 20, 2017 (Third Friday in January)
  • International Firefighter's Day - May 4
  • International Flirting Week - February 12-18, 2017 (Week of Valentines Day)
  • International Friendship Month - Entire Month of February
  • International Friendship Week - February 12-17, 2017
  • International Fun at Work Day - April 6, 2017 (April 1st, unless it falls on weekend, then the first Thursday in April)
  • International Games Day - November 19, 2016 (Third Saturday in November)
  • International Geocaching Day - August 19, 2017 (Third Saturday of August)
  • International Girls Day - November 14
  • International Group B Strep Awareness Month - Entire Month of July
  • International Guide Dog Day - April 26, 2017 (Last Wednesday in April)
  • International Guitar Month - Entire Month of April
  • International Hangover Day - August 5, 2017 (Day after International Beer Day)
  • International Healthcare Central Service/Sterile Processing Week - October 6-12, 2013 
  • International Homeless Animals Day -  August 19, 2017 (Third Saturday of August)
  • International Hoof Care Month - Entire Month of February
  • International Hoof Care Week - January 24-27, 2017
  • International Hot & Spicy Food Day - January 16
  • International Housekeepers Week - September 11-17, 2016 (Second Full Week of September)
  • International Hug Your Cat Day - May 30
  • International Human Solidarity Day - December 20
  • International Ideas Month - Entire Month of March
  • International Infection Prevention Week - October 16-22, 2016
  • International Internal Audit Awareness Month - Entire Month of May
  • International Internet Day - October 29
  • International Interpreters and Translators Week - September 18-24, 2016 (Last Full Week in September
  • International Jazz Day - April 30 as well as May 27, 2017 (Saturday of Memorial Day Weekend)
  • International Juggler's Day - April 18
  • International Kangaroo Care Awareness Day - May 15
  • International Kissing Day or World Kiss Day - July 6
  • International Kite Day - January 14
  • International Lace Day - September 24, 2016 (Last Saturday in September)
  • International Language Week - Third Week of December
  • International Lefthander's Day - August 13
  • International Listening Week - June 7-10, 2017
  • International Listening Weekend - March 10-12, 2016
  • International Listening Awareness Month - Entire Month of March
  • International Literacy Day - September 8
  • International "Louie Louie" Day - April 11
  • International Magic Week - October 25-31
  • International Marconi Day - April 23
  • International Men's Day - November 19
  • International Men's Makeup Day - November 1
  • International Men's Month - Entire Month of June
  • International Midwives Day - May 5
  • International Migrants Day - December 18
  • International Migratory Bird Day - May 13, 2017 (Second Saturday in May)
  • International Mirth Month - Entire Month of March
  • International Mobile Phone Recycling Day - January 27
  • International Moment of Frustration Scream Day - October 12
  • International Moment of Laughter Day - April 14
  • International Mother Earth Day - April 22
  • International Mother Language Day - February 21
  • International Mountain Day - December 11
  • International MPS Awareness Day - May 15
  • International Museum Day - May 18
  • International Music Day - October 1
  • International Myalgic Encephalomyelitis / Chronic Fatigue Syndome Awareness Day - May 12
  • International Networking Week - February 6-10, 2017
  • International New Year's Resolution Month for Business - Entire Month of January
  • International Newspaper Carrier Day - October 10
  • International No Diet Day - May 6
  • International Nude Day - July 14
  • International Nurses Day - May 12
  • International Overdose Awareness Day - August 31
  • International Pancake Day - February 28, 2017
  • International Panic Day - June 18
  • International People Skills Month - Entire Month of September
  • International Petroleum Week - February 21-23, 2017
  • International Phace Syndrome Awareness Week - March 26 - April 1, 2017 (Last Week of March)
  • International Pickle Day- May 16
  • International Pickles Week - Third Week in May
  • International Picnic Day - June 18
  • International Pillow Fight Day - April 1, 2017 (First Saturday in April)
  • International Pixel-Stained Technopeasant Day - April 23
  • International Polar Bear Day - February 27
  • International Pooper Scooper Week - April 1-7
  • International Post Card Week - October 2-8, 2016 (First Full Week of October)
  • International Prenatal Infection Prevention Month - Entire Month of February
  • International Printing Week - Third Week of January
  • International Programmer's Day - January 7 and also on September 13
  • International Quality of Life Month - Entire Month of January
  • International Rabbit Day - September 24, 2016 (Fourth Saturday or Sunday in September)
  • International Raccoon Appreciation Day - October 1
  • International Red Panda Day - September 17, 2016 (Third Saturday in September)
  • International Respect for Chickens Day - May 4
  • International Respect for Chickens Month - Entire Month of May
  • International Right to Know Day - September 28
  • International Romani Day - April 8
  • International Safety Pin Day - April 10
  • International Self-Awareness Month - September 1
  • International Shareware Day - December 12, 2015 (Second Saturday in December)
  • International Sister Cities Day - July 13-15, 2017
  • International Sloth Day - October 20
  • International Snailpapers Day - April 7
  • International Snowmobile Safety and Awareness Week - January 21-29, 2017
  • International Space Day - May 5, 2017 (First Friday in May)
  • International Speak Out Month - Entire Month of September
  • International Special Librarian's Day - April 13
  • International Sports Car Racing Day - March 18, 2017 (Third Saturday in March)
  • International Square Dancing Month - Entire Month of September
  • International Stage Management Day - October 10
  • International Starman Month - Entire Month of October
  • International Strange Music Day - August 24
  • International Strategic Thinking Month - Entire Month of September
  • International Strategic Planning Month - Entire Month of October
  • International Stuttering Awareness Day - October 22
  • International Surf Music Month - Entire Month of June
  • International Surfing Day - June 20
  • International Survivors of Suicide Day - November 23
  • International Sushi Day - June 18
  • International Sword Swallowers Day - February 25, 2017 (Last Saturday in February)
  • International Table Top Day - April 29, 2017
  • International Tatting Day - April 1
  • International Tea Day - December 15
  • International Thank-You Day - January 11
  • International Tiger Day - July 29
  • International Tongue Twister Day - November 13, 2016 (Second Sunday in November)
  • International Top Spinning Day - October 12, 2016 (Second Wednesday in October)
  • International Town Criers Day - July 10, 2017 (Second Monday in July)
  • International Translation Day - September 30
  • International Tree Climbing Week - July 28-30, 2017
  • International Turtle Day - May 23
  • International Twit Award Month - Entire Month of April
  • International Typing Day - October 8
  • International Underlings Day - February 29 (Every 4 Years - 2016, 2020, 2024 etc)
  • International Victorious Woman Month - Entire Month of May
  • International Virtual Assistants Day - May 19, 2017 (Third Friday in May)
  • International Volunteer Day for Economic and Social Development - December 5
  • International Volunteers Day - December 5
  • International Volunteers Week - June 1-7, 2015
  • International Waffle Day - March 25
  • International Walk to School Day - October 5, 2016
  • International Walk to School Month - Entire Month of October
  • International Wayfinding Month - Entire Month of January
  • International Week of Prayer for Christian Unity - January 18-25
  • International Wealth Mentality Month - Entire Month of January
  • International Week of Black Women In the Arts - February 7-15
  • International Week of Science and Peace - November 9-15, 2014 (The Week in Which November 11 Falls)
  • International Week of the Deaf - September 19-25, 2016
  • International Whale Shark Day - August 30, 2013
  • International Widow's Day - June 23
  • International Wildlife Film Week - April 15-22, 2017
  • International Women of Color Day - March 1
  • International Women with Alopecia Month - Entire Month of July
  • International Women's Day for Peace and Disarmament - May 24
  • International Women's E-Commerce Days - September 19-25, 2016
  • International Women's Friendship Month - Entire Month of September
  • International Workers Day - May 1
  • International Working Women's Day - March 8
  • International Year of Cooperatives - Annual United Nations Observance Year 2012
  • International Year of Crystallography - Annual United Nations Observance Year 2014
  • International Year of Family Farming - Annual United Nations Observance Year 2014
  • International Year of Light and Light-based Technologies - Annual United Nations Observance Year 2015
  • International Year of Pulses - Annual United Nations Observance Year 2016
  • International Year of Quinoa - Annual United Nations Observance Year 2013
  • International Year of Small Island Developing States - Annual United Nations Observance Year 2014
  • International Year of Soils - Annual United Nations Observance Year 2015
  • International Year of Solidarity with the Palestinian People - Annual United Nations Observance Year 2014
  • International Year of Sustainable Energy for All - Annual United Nations Observance Year 2012
  • International Year of Sustainable Tourism for Development - Annual United Nations Observance Year 2017
  • International Year of Water Cooperation - Annual United Nations Observance Year 2013
  • International Youth Day - August 12
  • International Young Eagles Day - June 10, 2017 (Second Saturday of June)
  • International Zine Month - Entire Month of July
  • Interstate Mullet Toss - April 28-30, 2017 (Last Full Weekend in April)
  • Introduce a Girl to Engineering Day - February 19, 2017 (Thursday of Engineering Week)
  • Inventors Day - September 29
  • IPod Day - October 23
  • Iris Day - May 8
  • Irish-American Heritage Month - Entire Month of March
  • Irritable Bowel Syndrome (IBS) Awareness Month - Entire Month of April
  • Islamic New Year - Evening of October 1, 2016 to Evening of October 2, 2016
  • Italian-American Heritage Month
  • It's About Time Week - December 25-31
  • IUGR Awareness Day - March 13, 2016 (IUGR = Intrauterine Growth Restriction)
  • Iwo Jima Day - February 19

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