⌂ Thematic calendars → Smart events
Smart Celebrations and Events
Smart events, Scientific traditions and Special days, professional and national Smart holidays in different countries of the world, significant events by month 
Help us
Help us National traditions, Public holidays and Notable observances for 2026-2027 year
April 2026
Wednesday 22 April - Chemists Celebrate Earth Day in USA (In 2003, the American Chemical Society joined in on April 22's festivities. Each year, ACS highlights one of four general topics and chooses a theme—this year it's "Our Earth: Handle With Care"—to focus the celebration and highlight how chemists can contribute to a greener world)
Thursday 23 April - International Girls in ICT Day (aims to encourage and empower girls and young women to consider studies and car eers in the growing field of Information and communications technology); International Pixel-Stained Technopeasant Day
Tuesday 28 April - Bacteriologist's Day in Colombia (Día del Bacteriólogo)
May 2026
Thursday 7 May - Physicist Day (since 1959)
Saturday 16 May - International Day of Light (initiated by UNESCO on November 14, 2017); Scratch Day (date for 2022); National Microbiologist and Clinical Chemist Day in Costa Rica
June 2026
Tuesday 2 June - Graduate Day in Economic Sciences, Argentina (Día del graduado en Ciencias Económicas)
Tuesday 9 June - Argentina Geologists Day (Día del Geólogo)
July 2026
Monday 13 July - Embrace Your Geekness Day (1990)
Friday 17 July - Yellow Pig Day (is a monthly collaborative art project celebrating the United States' wide array of bizarre national holidays)
August 2026
September 2026
Saturday 12 September - Day of the Workers in the Oil, Gas, Power, and Geological Industry in Turkmenistan (celebrated on the second Saturday in September)
Saturday 19 September - Astronomy Day (autumn)
October 2026
Friday 2 October - World Multiplication Table Day (Held on the first Friday in October); World Smile Day
Friday 9 October - National Nanotechnology Day (United States)
Thursday 15 October - Ada Lovelace Day (was created to celebrate one of the first computer programmers)
Saturday 17 October - Edge Day (International observance, Straight Edge Movement)
Thursday 22 October - Fechner Day (International observance)
Saturday 24 October - Global Media and Information Literacy Week; Astronomy Day in Argentina; Libraries Day in Spain; World Development Information Day
November 2026
December 2026
Thursday 3 December - Doctor and Medicine Day in Latin America (Día del médico y la Médica)
Sunday 6 December - Day of the Ministry of Communications and Information Technologies of Azerbaijan; Microwave Oven Day
January 2027
Friday 1 January - Z Day (People whose first or last name start with the letter Z must have it pretty rough. Most processes, systems and organizations use alphabetical sorting as standard, meaning they are always last no matter the place or occasion); Ohio Braille Literacy Week
Friday 8 January - Earth's Rotation Day (In 1851, the French physicist Léon Foucault demonstrated how the earth rotates by suspending a lead-filled brass ball from the top of the Panthéon in Paris)
Monday 25 January - A Room Of One's Own Day; International Community Manager Day (Held on the fourth Monday of January)
February 2027
Monday 1 February - World Read Aloud Day (is a day devoted to the power of literacy and the transformational joy that comes from sharing stories aloud within a family, a classroom, and a community. Founded by the nonprofit LitWorld and sponsored by Scholastic)
Friday 12 February - Darwin Day (International observance)
March 2027
Friday 26 March - World Maths Day (date for 2027)
April 2027
Thursday 15 April - International Biomedical Laboratory Science Day (is celebrated annually on 15 April to promote and acknowledge the role of biomedical laboratory professionals in diagnostic and preventative healthcare organisations)
Saturday 17 April - Food and Agriculture Organization Day or FAO Day in Iraq; National Dark Sky Week in USA (The darkest holiday of them all was founded in 2003, and every April the week of the new moon marks a time to shed some light on our big expanse of sky)
Patriots’ Day in Wisconsin
Wisconsin Public School Observance Day to mark the date in 1775 when shots were fired in Lexington, beginning of the Revolutionary War. (Event D..→
 Remind me of this day
|
Birthday of Jose de Diego in Puerto Rico (Natalicio de Jose de Diego)
Jose de Diego’s memory has been honored in Puerto Rico by having his birthdate observed as an official holiday as well as the naming of schools,..→
|
Remind me of this day
|
Patriots’ Day in Maine and Massachusetts
Patriots’ Day is an official state holiday in Maine, Massachusetts and Wisconsin commemorating the anniversary of the Battles of Lexington and C..→
|
Remind me of this day
|
John Muir Day in California
John Muir (April 21, 1838 – December 24, 1914) was a Scottish-American naturalist, author, environmental philosopher and early advocate of prese..→
|
Remind me of this day
|
San Jacinto Day in Texas
San Jacinto Day is the celebration of the Battle of San Jacinto on April 21, 1836. It was the final battle of the Texas Revolution where Texas w..→
|
Remind me of this day
|
World Creativity and Innovation Day
It is imperative we use creativity in problem-solving to address the challenges we face. Traditional thinking will no longer do, - Ambassador I...→
|
Remind me of this day
|
Administrative Professionals’ Day
Administrative Professionals Day (also known as Secretaries Day or Admin Day) is an unofficial secular holiday observed in several countries to ..→
|
Remind me of this day
|
|
Remind me of this day
|
Environmental Awareness Day in Wisconsin
Wisconsin Public School Observance Day, marking the anniversary of Earth Day and urging schools to conduct programs across subject areas to enha..→
|
Remind me of this day
|
World Book and Copyright Day
World Book Day or World Book and Copyright Day (also known as International Day of the Book or World Book Days) is a yearly event on April 23rd,..→
|
Remind me of this day
|
|
Remind me of this day
|
World Day for Laboratory Animals
World Day for Laboratory Animals on April 24 is a United Nations recognized day of international commemoration of the suffering and killing of m..→
|
Remind me of this day
|
|
Remind me of this day
|
|
Remind me of this day
|
World Malaria Day
World Malaria Day (WMD) is an international observance commemorated every year on 25 April and recognizes global efforts to control malaria. Glo..→
|
Remind me of this day
|
World Intellectual Property Day
World Intellectual Property Day is observed annually on 26 April. The event was established by the World Intellectual Property Organization (WIP..→
|
Remind me of this day
|
Confederate Memorial Day in Alabama, Florida, and Georgia (State holiday)
While Florida would later join Georgia in marking April 26 as Confederate Memorial Day, other states celebrated different dates. By 1916, ten so..→
|
Remind me of this day
|
Confederate Memorial Day in Florida (Local observance)
Confederate Memorial Day in Florida - Local observance: When April 26 is a Sunday, it is recognized the following Monday.
History: White settle..→
|
Remind me of this day
|
Confederate Memorial Day in Mississippi (State holiday)
Whereas, the Legislature has designated the last Monday of April as the day for the observance of Confederate Memorial Day, and under the provis..→
|
Remind me of this day
|
Emma ’Grandma’ Gatewood Day in Ohio
Emma Rowena Gatewood, better known as Grandma Gatewood (October 25, 1887–June 4, 1973), was an extreme hiker and ultra-light hiking pioneer who ..→
|
Remind me of this day
|
Days of Remembrance of the Victims of the Holocaust
The Days of Remembrance of the Victims of the Holocaust (DRVH) is an annual 8-day period designated by the United States Congress for civic comm..→
|
Remind me of this day
|
