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Calendar of STEM-related seasonal events and holidays

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Ideas for incorporating STEM content into holidays, seasons, annual events, and special events throughout the year.


Please also visit our Big STEM Celebrations collection of resources


Ideas for All Seasons

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Snow, Snowflakes, January, and February

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March, April, and May

Summer thumbnail showing green trees


Sun, Sand, Summer Camp, June, July, and August

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Back to School, September, October, November, and December

Jump to Other Special Events and Past Events


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Celestial Events

Meteor showers, lunar eclipses, full moons, planetary events, and more!


What's up this month

Solar Eclipse - upcoming visible in North America: June 10, 2021 and April 8, 2024

Lunar Eclipses - upcoming visible in North America: May 26 and Nov 19, 2021

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Snow and Snowflakes:


Predictions for the New Year (January 1) 

National Bird Day (January 5)

National Static Electricity Day (January 9)


Black History Month / African-American History Month (February) -  celebrate people in STEM

Groundhog Day (February 2)

  • Use Exploring Earth: Bear's Shadow activity to make and experiment with shadows
  • STEM topics to explore include: signs of spring (animals emerging from hibernation), signs of winter (clear, cold das), and seasons (February 2 lies midway between the Winter Solstice and the Spring Equinox) 
  • NASA Space Place Reasons for Seasons

World Radio Day (February 13)

Valentine's Day (February 14) 

National Engineers Week (February) 
Introduce a Girl to Engineering Day (February)

National Battery Day (February 18)

Great Backyard Bird Count (mid-February)

Leap Day (February 29) (every four years)

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Women's History Month (March)celebrate people in STEM
International Women's Day (March 8)

NanoDays (last weekend in March - first weekend in April)
2021: March 27-April 4
2022: March 26-April 3
2023: March 25-April 2

World Engineering Day for Sustainable Development (March 4)

Groundwater Awareness Week (second full week in March)

Dr. Seuss Day (March 2) 

Brain Awareness Week (mid-March)

Pi Day (March 14)  
International Day of Mathematics (March 14)

National Learn about Butterflies Days (March 14)

World Water Day (March 22)

Solar Week (last full week in March)

Earth Hour (mid-March) 


Citizen Science Month (April) - please see Citizen Science day mid-April

National Kite Month (April)

Global Astronomy Month (April) 
Astronomy Day (Spring) (held in April or May) (May 15, 2021) 
Astronomy Week (Spring) (held in April or May) (May 10-16, 2021)

Mathematics and Statistics Awareness Month

World Health Day (April 7)

International Dark Sky Week (first week in April)

National Robotics Week / RoboWeek (second week in April) 

Yuri's Night (April 12)

World Quantum Day (April 14)

World Art Day (April 15)

Black Hole Week (mid-April) (April 12-16, 2021)

National Math Festival (mid-April)

Citizen Science Day (mid-April)
Citizen Science Month (April)

Earth Day (April 22)
National Environmental Education Week (week of Earth Day)

Take Your Child To Work Day / Take Our Daughters And Sons To Work Day (fourth Thursday in April)

DNA Day (April 25)

National Poetry Month (April)


Astronomy Day (Spring) (held in April or May) - please see April for details
Astronomy Week (Spring) (held in April or May) - please see April for details

National Physical Fitness and Sports Month (May)

Asian American and Pacific Islander Month - celebrate people in STEM

May the Fourth Be With You - Star Wars Day (May 4)

National Children’s Book Week (early May) 

Caribbean Mosquito Awareness Week (May)

International Day of Light (May 16)

National Week of Making (May 11-17)

National Public Works Week (mid-May)


Museum Day (May 18)

Global Accessibility Awareness Day (GAAD) (May 19, 2022, May 18, 2023, May 16, 2024) 
The purpose of GAAD is to get everyone talking, thinking and learning about digital access/inclusion and people with different disabilities.

National Paper Airplane Day (May 26)

Summer thumbnail showing green trees


Summer Reading

Sun and Sand

Summer Camp


Pride Month (June) - celebrate people in STEM

World Environment Day (June 5)

World Oceans Day (June 8)

Juneteenth (June 19) - celebrate people in STEM

International Women in Engineering Day (June 23)

National Mosquito Control Awareness Week  - Fight the Bite (last full week in June)

Asteroid Day (June 30)


Plastic Free July (July)

Moon Landing - anniversary of Apollo 11 first step on the Moon July 20, 1969 (July 20)

National Ice Cream Day (July 18)

World Brain Day (July 22)


National Sand Castle Day (first Saturday of August)

National Aviation Day (August 19)

World Mosquito Day (August 20)

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Back to School 


Read a Book Month (September)

National Hispanic Heritage Month (September 15- October 15) - celebrate people in STEM

National Pollution Prevention Week (P2 Week) (third week in September)

Worldwide Day of Play (WWDoP) (mid-September) Global School Play Day

World Cleanup Day (mid-September)

National Bike Month (September)
Bike to Work Week (third week in September)

International Day of Scientific Culture / Día Internacional de la Cultura Científica (September 28)

International Observe the Moon Night (date selected in September/October based on viewing ) (October 21, 2021)


Astronomy Day (Fall) (October 5, 2019; September 26, 2020; October 9, 2021)

Astronomy Week (Fall) (September 30-October 6, 2019; September 21-27, 2020; October 4-10, 2021)

World Space Week (October 4-10)

Manufacturing Day (MFG Day) (first Friday in October)

National Nano Day (October 9th)
National Nanotechnology Day (#NationalNanoDay) is an annual celebration and pays homage to the nanometer scale, 10–9 meters.

Metric Day (October 10th)

Artificial Intelligence (AI) - World AI Week (2nd week in October)

Campus Sustainability Month (October)

Earth Science Week (second full week in October)
October 10-16, 2021)

National Chemistry Week (third full week in October)
Mole Day (October 23) 
commemorates Avogadro's Number (6.02 x 1023), which is a measuring unit in chemistry.

International Observe the Moon Night (date selected in September/October based on viewing ) (October 16, 2021)

Solar Week (mid-October)

Imagine a Day Without Water (mid-October) (October 21, 2021)

Nuclear Science Week (NSW) (third week in October)

Dark Matter Day (on or around October 31)

Halloween (October 31)


Native American Heritage Month / American Indian and Alaska Native Heritage Month (November) - celebrate people in STEM

World Tsunami Awareness Day (November 5)


National STEM - STEAM Day (November 8)


International Day of Radiology & World Radiography Day (November 8)
The date marks the anniversary of the discovery of X-Rays by Wilhelm Roentgen in 1895

International Science Center and Science Museum Day (November 10) 
World Science Day for Peace and Development  (November 10) 

America Recycles Day (November 15)

Pride in STEM Day (November 18) - celebrate people in STEM
International Day of LGBTQIA+ People in STEM

Thanksgiving (November)

Black Hole Friday (last Friday in November)


National Disability Day (December 3)
International Day of Persons with Disabilities (December 3)

Computer Science Education Week (CSEdWeek) and Hour of Code (second week in December)

Games Day (December 20)

  • explore this website by searching the topic: Games


Super Hero activities

Science Fiction 

Food related activities

  • NISE Network food activities
    Food is a great way to connect relevance of STEM content to our lives. Activities explore the science of cooking and preparing food, some of the societal choices about how we grow and process food. Activities can be incorporated into events that involve cooking an eating, food festivals, and annual celebrations like Halloween and Valentine's Day.

Past Events

2019 - Year long events

2015 - year-long events

International Year of Light (2015)

Short hands-on activities



Online workshop

More light activities

2014 - year-long events

International Year of Crystallography (2014)

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