Science and education: 255 holidays
January
- January 1 · Public Domain Day
- January 2 · Science Fiction Day
- January 4 · World Braille Day
- January 4 · World Hypnosis Day
- January 4 · Newton Day
- January 7 · Old Rock Day
- January 8 · Earth's Rotation Day
- January 9 · Word Nerd Day
- January 9 · Static Electricity Day
- January 10 · Coauthors Day
- January 10 · World Hindi Day
- January 14 · World Logic Day
- January 15 · Wikipedia Day
- January 16 · Teachers’ Day in Thailand
- January 17 · Kid Inventors’ Day
- January 17 · International Mentoring Day
- January 18 · Thesaurus Day
- January 21 · International PhD Student Day
- January 23 · National Handwriting Day
- January 24 · International Day of Education
- January 25 · Belarusian Science Day
- January 25 · Tatiana Day — Russian Students' Day
- January 26 · International Day of Clean Energy
- January 29 · International Day of Balanced and Inclusive Education
- January 30 · School Day of Non-violence and Peace
February
- February 7 · Russian Business Education Day
- February 7 · Periodic Table Day
- February 8 · Military Topographer's Day in Russia
- February 8 · Russian Science Day
- February 11 · International Day of Women and Girls in Science
- February 11 · World Unani Day
- February 12 · Darwin Day
- February 17 · Russian Student Brigades Day
- February 18 · Battery Day
- February 19 · Prevent Plagiarism Day
- February 21 · Land Management, Cartography and Geodesy Workers' Day in Belarus
- February 21 · International Mother Language Day
- February 22 · Land Management, Geodesy and Cartography Workers' Day in Kyrgyzstan
- February 24 · International SCN2A Awareness Day
- February 28 · Arctic Day
- February 28 · Kalevala Day
March
- March 1 · Russian Ministry of Internal Affairs Forensic Service Day
- March 4 · World Engineering Day for Sustainable Development
- March 5 · World Energy Efficiency Day
- March 7 · Teachers' Day in Albania
- March 8 · Proofreading Day
- March 8 · Surveying and Cartography Workers' Day in Russia
- March 9 · Outside-the-Box Thinkers' Day
- March 9 · Teachers' Day in Lebanon
- March 14 · Mother Tongue Day in Estonia
- March 14 · International Day of Mathematics
- March 14 · Pi Day
- March 15 · World Speech Day
- March 15 · World Contact Day
- March 19 · International Day of Digital Learning
- March 19 · World Taxonomist Appreciation Day
- March 20 · Spring Equinox
- March 20 · French Language Day at the UN
- March 20 · International Francophonie Day
- March 21 · World Poetry Day
- March 23 · World Meteorological Day
- March 23 · Russian Hydrometeorological Service Workers' Day
- March 28 · World Historians' Day
April
- April 2 · International Fact-Checking Day
- April 5 · Geologist's Day
- April 9 · Finnish Language Day
- April 12 · World Aviation and Cosmonautics Day
- April 12 · Kazakhstan Science Workers' Day
- April 14 · World Quantum Day
- April 14 · N'Ko Alphabet Day
- April 15 · Environmental Awareness Day
- April 18 · World Amateur Radio Day
- April 19 · Bicycle Day
- April 20 · UN Chinese Language Day
- April 21 · World Creativity and Innovation Day
- April 23 · UN English Language Day
- April 23 · UN Spanish Language Day
- April 23 · International Girls in ICT Day
- April 24 · World Day for Laboratory Animals
- April 25 · DNA Day
- April 25 · Chuvash Language Day
- April 26 · World Intellectual Property Day
- April 27 · World Morse Code Day
May
- May 3 · Sun Day
- May 5 · World Portuguese Language Day
- May 7 · International Planetariums Day
- May 12 · Environmental Education Day
- May 15 · Ossetian Language and Literature Day
- May 15 · International Climate Day
- May 16 · Science Day in Ukraine
- May 16 · International Day of Light
- May 17 · World Telecommunication and Information Society Day
- May 18 · International Museum Day
- May 18 · Fascination of Plants Day
- May 18 · World AIDS Vaccine Day
- May 20 · World Metrology Day
- May 20 · Sign Language Interpreter Day in Ukraine
- May 21 · Polar Explorer's Day
- May 24 · Slavic Literacy and Culture Day
- May 25 · Philologist's Day in Russia
- May 27 · Cellophane Tape Day
- May 31 · Chemist's Day
June
- June 2 · World Peatlands Day
- June 6 · Russian Language Day at the UN
- June 9 · World Accreditation Day
- June 11 · International Day of Play
- June 12 · Science Day in Turkmenistan
- June 15 · Young Naturalists’ Movement Day in Russia
- June 16 · Day of the African Child
- June 18 · Historian’s Day in Moldova
- June 18 · International Day for Countering Hate Speech
- June 21 · World Hydrography Day
- June 21 · International Day of the Celebration of the Solstice
- June 25 · Statistics Workers’ Day in Russia
- June 26 · World Refrigeration Day
- June 27 · Inventors' and Innovators' Day in Russia
- June 27 · World Microbiome Day
- June 28 · Youth and Students’ Day in Belarus
- June 28 · Forensic Expert’s Day in Russia
- June 28 · Tau Day
- June 29 · International Day of the Tropics
- June 30 · International Asteroid Day
- June 30 · Meteor Watch Day
July
- July 2 · World UFO Day
- July 4 · Forensic Expert Day in Ukraine
- July 7 · World Kiswahili Language Day
- July 8 · Math 2.0 Day
- July 10 · Nikola Tesla Day
- July 11 · World Population Day
- July 13 · International Puzzle Day
- July 14 · International Shark Awareness Day
- July 15 · World Youth Skills Day
- July 15 · Arctic Sea Ice Day
- July 17 · Ethnographer's Day in Russia
- July 17 · Yellow Pig Day
- July 18 · World Listening Day
- July 20 · World Chess Day
- July 20 · International Moon Day
- July 20 · International Chess Day
- July 22 · World Brain Day
- July 22 · Pi Approximation Day
- July 25 · World Embryologist Day
- July 26 · Esperanto Day
August
- August 1 · Azerbaijani Alphabet and Language Day
- August 10 · International Biodiesel Day
- August 12 · International Youth Day
- August 15 · Archaeologist Day
- August 15 · International Apostrophe Day
- August 18 · Geographer's Day in Russia
- August 18 · National Science Day in Thailand
- August 18 · World Breast Cancer Research Day
- August 20 · World Mosquito Day
- August 23 · State Statistics Workers' Day in Belarus
- August 24 · Pluto Demoted Day
- August 28 · Makaton International Awareness Day
- August 31 · Limba Noastră — National Language Day in Moldova
- August 31 · World Distance Learning Day
September
- September 1 · Knowledge Day
- September 1 · International Primate Day
- September 2 · Calendar Adjustment Day
- September 5 · Teachers' Day in India
- September 5 · Day of the Languages of the People of Kazakhstan
- September 6 · Belarusian Written Language Day
- September 8 · International Literacy Day
- September 9 · International Day to Protect Education from Attack
- September 10 · Teachers' Day in China
- September 10 · Swap Ideas Day
- September 10 · Blame It on the Large Hadron Collider Day
- September 11 · Teachers' Day in Argentina
- September 15 · International Dot Day
- September 16 · International Day for the Preservation of the Ozone Layer
- September 18 · World Water Monitoring Day
- September 18 · Mini MBA Day
- September 18 · Astronomy Day in Armenia
- September 19 · Inventors and Innovators Day in Ukraine
- September 20 · International Day of University Sport
- September 21 · World Russian Unity Day
- September 21 · Zero Emissions Day
- September 23 · State Language Day of the Kyrgyz Republic
- September 23 · Autumn Equinox
- September 23 · International Day of Sign Languages
- September 26 · European Day of Languages
- September 27 · Preschool Workers' Day in Russia
- September 28 · Nuclear Industry Workers’ Day in Russia
- September 28 · Nuclear Industry Workers’ Day in Kazakhstan
- September 28 · Confucius's Birthday in China
- September 28 · International Day for Universal Access to Information
- September 30 · All-Ukrainian Libraries Day
- September 30 · International Translation Day
October
- October 1 · Teachers and Mentors Day in Uzbekistan
- October 2 · Vocational Education Day in Russia
- October 2 · International Social Pedagogy Day
- October 4 · World Space Week
- October 4 · Education Workers' Day in Ukraine
- October 4 · Teachers' Day in Belarus
- October 5 · World Teachers’ Day
- October 8 · Extracurricular Educators' Day in Russia
- October 9 · Hangul Day
- October 10 · Standardisation and Metrology Workers' Day in Ukraine
- October 10 · Targmanchats, the Feast of the Holy Translators
- October 11 · International Day of the Girl Child
- October 13 · International Plain Language Day
- October 14 · National Education Day in Poland
- October 15 · Pharmaceutical and Microbiological Industry Workers' Day in Belarus
- October 15 · Teachers' Day in Brazil
- October 23 · Mole Day
- October 24 · Standardization and Metrology Workers' Day in Kyrgyzstan
- October 26 · International School Library Day
- October 27 · Ukrainian Writing and Language Day
- October 28 · International Creole Day
- October 31 · Sign Language Interpreter Day in Russia
November
- November 1 · National Awakeners' Day in Bulgaria
- November 3 · Culture Day in Japan
- November 5 · World Romani Language Day
- November 6 · Swedish Heritage Day in Finland
- November 7 · International Day of Medical Physics
- November 8 · Statisticians' Day in Kazakhstan
- November 8 · International Day of Radiology
- November 9 · Inventors' Day
- November 10 · World Science Day for Peace and Development
- November 10 · Kyrgyzstan Science Day
- November 11 · Economist's Day in Russia
- November 13 · International Day of the Blind
- November 14 · Bal Diwas — Children's Day in India
- November 14 · Sociologist's Day in Russia
- November 17 · International Students' Day
- November 18 · World AMR Awareness Week
- November 19 · World Philosophy Day
- November 19 · University Teachers' Day in Russia
- November 19 · Glass Industry Workers' Day in Russia
- November 19 · Hydrometeorological Service Workers' Day in Ukraine
- November 23 · Fibonacci Day
- November 24 · Evolution Day
- November 26 · World Information Day
- November 28 · Red Planet Day
December
- December 1 · Mathematician's Day in Russia
- December 1 · Antarctica Day
- December 2 · World Computer Literacy Day
- December 4 · Computer Science Day in Russia
- December 5 · World Soil Day
- December 5 · Statistics Workers' Day in Ukraine
- December 8 · Student Day in Bulgaria
- December 10 · Nobel Prize Day
- December 12 · Kyrgyzstan National Literature Day
- December 14 · Bashkir Language Day
- December 14 · Oil, Gas and Geology Workers Day in Turkmenistan
- December 15 · Zamenhof Day
- December 17 · Pan American Aviation Day
- December 18 · Arabic Language Day at the UN
- December 20 · Cathode Ray Tube Day
- December 22 · Hydrometeorological Service of the Russian Armed Forces Day
- December 22 · World Thermometer Day
- December 23 · HumanLight
- December 24 · Archive Workers' Day in Ukraine
- December 25 · Newtonmas