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Need a Diversity Calendar for 2025? Get complete DEI and inclusion events, religious observances, awareness months 2025, and more
In 2025, the importance of diversity, equity, and inclusion continues to be a central theme in our global conversation. While we have made strides in creating more inclusive environments, there is always room for growth and improvement. A truly thriving society depends on recognizing and celebrating our differences.
Organizations are increasingly focused on developing DEI initiatives that ensure every employee feels valued and included. One effective tool to support these efforts is our Diversity Calendar, which highlights DEI holidays and significant cultural events throughout the year. This calendar serves as a reminder of the importance of inclusion in our daily lives and workplaces.
Below, you’ll find a sample of our diversity and inclusion calendar for 2025, featuring religious holidays, awareness months, and monthly diversity themes. This selection is designed to help you celebrate and integrate these important dates into your personal and professional life.
If a holiday begins the evening before, we will mark it with an asterisk (*) below.
January is a month to celebrate the diverse ways in which we communicate and connect with each other. From recognizing the importance of Braille for the visually impaired to honoring cultural and religious celebrations, this month is about understanding and appreciating the various forms of expression that enrich our world.
January 4 – UN: World Braille Day
Celebrates the importance of Braille for the visually impaired.
January 7 – Coptic & Eastern Orthodox Christian: Christmas
Marks the birth of Jesus Christ according to the Julian calendar.
January 14 – Buddhist: Mahayana New Year
Celebrates the Buddhist New Year in Mahayana traditions.
January 20 – Martin Luther King Jr. Day
Honors the civil rights leader and his contributions to equality.
January 27 – International Day of Commemoration in Memory of Victims of the Holocaust
Remembers the victims of the Holocaust and promotes Holocaust education.
Learn more about January diversity days with our web-based DEI Calendar suite. Make sure to also check out our Heritage Months 2025 highlights.
February is dedicated to celebrating Black History Month, a time to honor the contributions, achievements, and rich history of Black Americans. This month also includes significant events that promote harmony and awareness across various cultural and health-related spectrums.
February 1 – UN: World Interfaith Harmony Week
Promotes harmony between all people regardless of their faith.
February 2 – Pagan and Wiccan: Imbolc
Celebrates the beginning of spring and the goddess Brigid.
February 4 – World Cancer Day
Raises awareness of cancer prevention, detection, and treatment.
February 17 – Washington’s Birthday (Presidents’ Day)
Honors the birthday of George Washington, the first U.S. President.
February 26 – Hindu: Maha Shivaratri
A major Hindu festival celebrating Lord Shiva.
Read more about February awareness days to celebrate with our February Diversity Calendar 2025, and check out our National Awareness Months 2025 blog post.
March is dedicated to celebrating Women’s History Month, a time to recognize the contributions and achievements of women throughout history. This month also features important observances across different faiths and cultures, emphasizing the importance of equality and diversity.
March 1 – Islamic: Ramadan
A holy month of fasting, prayer, and reflection for Muslims.
March 5 – Christian: Ash Wednesday
Marks the beginning of Lent, a season of fasting and prayer.
March 8 – International Women’s Day
Celebrates the achievements of women and calls for gender equality.
March 14 – Hindu: Holi
The festival of colors, celebrating the arrival of spring.
March 14 – Sikh: Hola Mohalla
A Sikh festival featuring martial arts, poetry, and community gatherings.
Discover more March religious holidays to celebrate with our Interfaith Calendar 2025.
April is dedicated to World Autism Month, raising awareness and promoting understanding and acceptance of people with autism. This month also includes diverse religious and cultural celebrations, highlighting the rich tapestry of global traditions.
April 2 – World Autism Awareness Day
Promotes understanding and acceptance of people with autism.
April 12 – Jehovah’s Witnesses: The Memorial of Jesus’ Death
Commemorates the death of Jesus Christ.
April 13-20 – Jewish: Passover*
Celebrates the liberation of the Israelites from Egyptian slavery.
April 14 – Sikh, Hindu: Vaisakhi
Marks the Sikh New Year and celebrates the spring harvest.
April 20 – Christian: Easter
Celebrates the resurrection of Jesus Christ.
Learn about more April diversity events with our April Diversity Calendar 2025.
May is Mental Health Awareness Month, a time to promote mental well-being and reduce the stigma surrounding mental health issues. This month also includes events that recognize diverse cultural, religious, and social contributions to our global community.
May 12 – Buddhist: Vesak (Buddha Day)
Celebrates the birth, enlightenment, and death of Buddha.
May 15 – Global Accessibility Awareness Day
Promotes digital accessibility and inclusion for people with disabilities.
May 17 – LGBTQ+: International Day Against Homophobia, Transphobia, and Biphobia
Raises awareness of discrimination against LGBTQ+ individuals.
May 17 – Veterans: Armed Forces Day
Honors the men and women who serve in the military.
May 28 – Baha’i: Ascension of Baha’u’llah*
Commemorates the passing of the founder of the Baha’i Faith.
Discover more May religious holidays or May heritage events with our May Diversity Calendar 2025. Make sure to celebrate diversity months 2025.
June is LGBTQ+ Pride Month, celebrating the diversity, history, and contributions of the LGBTQ+ community. This month also includes events emphasizing love, acceptance, and the importance of countering hate speech.
June 2-3 – Jewish: Shavuot*
Celebrates the giving of the Torah at Mount Sinai.
June 7-10 – Islamic: Eid al-Adha*
A major Islamic festival commemorating the willingness of Ibrahim to sacrifice his son.
June 12 – US: Loving Day
Celebrates the anniversary of the Supreme Court decision that struck down laws banning interracial marriage.
June 18 – UN: International Day of Countering Hate Speech
Promotes efforts to combat hate speech worldwide.
June 19 – US: Juneteenth
Commemorates the emancipation of enslaved African Americans.
Learn more about different June religious holidays and June awareness days with our June Diversity Calendar 2025.
July is Disability Pride Month, celebrating the achievements and contributions of people with disabilities. This month also includes significant cultural and national observances that promote equality and inclusion.
July 4 – US: Independence Day
Celebrates the independence of the United States.
July 9 – Baha’i: Martyrdom of the Bab*
Commemorates the execution of the Baha’i co-founder.
July 14 – LGBTQ+: International Non-Binary People’s Day
Raises awareness of non-binary gender identities.
July 18 – UN: Nelson Mandela International Day
Honors the legacy of Nelson Mandela and promotes global peace.
July 24 – Church of Jesus Christ of Latter-day Saints: Pioneer Day
Commemorates the arrival of the first Mormon pioneers in Utah.
Visit the July Diversity Calendar 2025 to learn more about all of the important July religious holidays and July heritage events.
August is Intersectionality Awareness Month, highlighting the interconnected nature of social categorizations such as race, class, and gender. This month features events that promote understanding and advocacy for diverse and intersecting identities.
August 9 – UN: International Day of the World’s Indigenous People
Celebrates the cultures and contributions of Indigenous peoples worldwide.
August 19 – UN: World Humanitarian Day
Honors humanitarian workers and advocates for those affected by crises.
August 21 – Jain: Paryushana begins
Marks the beginning of an important Jain festival focused on fasting and forgiveness.
August 26 – US: Women’s Equality Day
Commemorates the certification of the 19th Amendment granting women the right to vote.
August 27 – Hindu: Ganesh Chaturthi
Celebrates the birth of Lord Ganesha.
Explore more August diversity days and August awareness days with our August Diversity Calendar 2025.
September celebrates Hispanic Heritage Month, recognizing the contributions and influence of Hispanic Americans to the history, culture, and achievements of the United States. This month also includes observances that promote mental health, safety, and equality.
September 10 – World Suicide Prevention Day
Raises awareness about suicide prevention.
September 11 – US: Patriot Day
Remembers the victims of the September 11 attacks.
September 15 – World Afro Day
Celebrates Afro hair and the cultural significance behind it.
September 18 – UN: International Equal Pay Day
Promotes the fight for equal pay for equal work.
September 23 – UN: International Day of Sign Languages
Celebrates sign languages and their importance for deaf communities.
Learn more about important September awareness days and September religious holidays on our September Diversity Calendar 2025.
October is Breast Cancer Awareness Month, dedicated to raising awareness and promoting research for breast cancer. This month also features diverse cultural and religious events that foster inclusion and understanding.
October 1 – UN: International Day for Older Persons
Promotes the rights and well-being of older persons worldwide.
October 2 – Jewish: Yom Kippur*
The holiest day in Judaism, dedicated to atonement and repentance.
October 10 – World Inclusion Day
Encourages inclusive practices and environments for all.
October 15 – LGBTQ+: International Pronouns Day
Raises awareness about respecting and using correct pronouns.
October 20 – Hindu: Diwali
The festival of lights, celebrating the victory of light over darkness.
Explore more October heritage months and October awareness days with our October Diversity Calendar 2025.
November is Native American Heritage Month, celebrating the cultures, traditions, and histories of Native Americans. This month also includes observances that honor veterans and promote gender equality and remembrance.
November 11 – US: Veterans Day
Honors military veterans who have served in the U.S. Armed Forces.
November 19 – International Men’s Day
Highlights positive male role models and issues facing men globally.
November 20 – LGBTQ+: Transgender Day of Remembrance
Memorializes those who have lost their lives due to anti-transgender violence.
November 27 – US: Thanksgiving Day
A national holiday for giving thanks and spending time with family and friends.
Visit here to read more about November diversity days with our November Diversity Calendar 2025.
December is Universal Human Rights Month, promoting the protection and advocacy of human rights for all. This month also includes diverse religious and cultural celebrations that encourage unity and peace.
December 3 – UN: International Day of Persons with Disabilities
Promotes the rights and well-being of persons with disabilities.
December 10 – UN: International Human Rights Day
Celebrates the adoption of the Universal Declaration of Human Rights.
December 21 – Pagan and Wiccan: Yule*
Celebrates the winter solstice and the rebirth of the sun.
December 25 – Christmas
Celebrates the birth of Jesus Christ.
December 26-January 1 – US: Kwanzaa
A week-long celebration honoring African heritage in African-American culture.
Discover even more insightful and interesting diversity days that you can celebrate during December with our Diversity Calendar Suite. You can also explore more inclusion opportunities with our Interfaith Calendar 2025.
We hope you’ve found this Diversity Calendar 2025 Highlights useful in your quest for DEI and learning more about DEI holidays 2025. Try out the full Online Diversity Calendar for all 1,000+ DEI events, religious holidays, and observances.
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
Diversity Resources is the leading provider of
inclusion training + daily belonging tools
By Ashley Langham
Archimedes was a Grecian mathematician, who was more famous for his mechanical inventions than his mathematical skills, during his time; yet, he was extremely skilled and enthralled with the study of geometry. He was also a skilled physicist, engineer, and astronomer.
He had many achievements in mathematics that led to modern day theories and studies. He famously calculated an approximate value of pi and his contributions led to the development of calculus.
One can still find his impact honored on the Fields Medal Award, an award for outstanding achievements in mathematics for young mathematicians. He is quoted saying, “Rise above oneself and grasp the world,” which is located at the bottom of the award.
Unfortunately, he was be so fixated by geometry, his obsession led to his murder. Read on to learn more about his work and life!
Portrait of Domenico-Fetti Archimedes, 1620, via Wikimedia
There is little known about Archimedes' life because most of his personal writings were lost over the years. What we do know is that he was born in Syracuse, an island of Sicily. His father, Phidias, was an astronomer and likely influenced his son’s interest in the subject.
At some point in his life he had to have studied in Alexandria, Egypt, which was the ancient hub for science and mathematics, during his time. From his own writings that survived, he speaks of interacting and learning from his fellow mathematician friends and colleagues that were located there. Both Conon of Samos, a Greek astronomer and mathematician, and Eratosthenes, Chief Librarian at the Library of Alexandria, mentioned Archimedes in their writings as well, which would put him in Alexandria at some point during his young adulthood. However, at some point, he returned home to Syracuse and spent the majority of the rest of his life there.
What was known of Archimedes is that he was quite a talented inventor. He created an invention that was a screw for lifting water out of the ocean, that was later named after him. He also was instrumental in creating the war machines used to delay the Roman siege of Syracuse in 211 and 212 BCE. He also was attributed to have made a device that demonstrated the motion of the sun, the moon, and the planets in the galaxy; though the details of this device are somewhat uncertain.
He was supposedly commissioned by his town’s leader, King Hiero II, to find a method to properly assess the volume of an asset. Hiero II suspected that his goldsmith was cheating him out of making a solid gold crown for him. He suspected that his goldsmith used a bit of silver instead, which was a cheaper metal. Hiero II used Archimedes to find a method of determining whether his crown was solid gold or had bits of silver without destroying it. Archimedes devised a method for discovering the apparent scam by submerging himself in his bath water. He noticed from stepping into the bath, that the water levels rose, making it possible for him to measure volume. He was therefore attributed to have discovered the law of buoyancy. However, this story and the ability to measure volume was only attributed to Archimedes 200 years after the incident allegedly happened; written by Vitruvius, a Roman architect.
Cicero Discovering the Tomb of Archimedes, painted by artist Benjamin West during 1950, via Wikipedia
Archimedes made most of his contributions in the field of geometry. Apparently he wrote nine treatises, yet only fragments of two survived. In his Measurement of the Circle treatise, a fragment survived that measured the approximated value of pi between the limits of 3 10/71 and 3 1/7. He also states in this treatise that the area of any circle is equal to the area of a right triangle in which one of the legs of the right angle is equal to the radius of the circle and the other leg is equal to its circumstance.
In his Sphere and Cylinder treatise, he demonstrates that the surface area of a sphere is four times that of a great circle. It was his work in this treatise that makes him stand out the most as a mathematician. Despite how rudimentary mathematics was at the time, he was able to show the relationship between the volume of a sphere and that of a circumscribed cylinder.
In fact, in Sphere and Cylinder he gave instructions for his tomb to be marked with a sphere inscribed in a cylinder. However, no one knows the exact location of his tomb; though Cicero, a Roman philosopher, claimed he went there.
He also perfected upon two theories, the method of exhaustion and the reduction to absurdity. The former was a purely mathematical theory for finding the area, or volume, of a shape by inscribing it inside a sequence of polygons with increased numbers of sides. The latter was a philosophical theory whereby one attempts to disprove a statement by showing that it will lead to an absurd conclusion, i.e. 1=0.
The Death of Archimedes, painted by artist Thomas Degeorge during 1815, via Wikipedia
Archimedes was fascinated by geometry; so much so he would often be so enthralled in the subject matter, he would have chosen studying geometry over bathing! Plutarch, a Roman writer, captures this adoration with this anecdote:
“Oftentimes, [Archimedes] servants got him against his will to bathe, to wash, and anoint him, and yet being there, he would ever be drawing out the geometrical figures in the very embers of the chimney. And while they were anointing him with oils and sweet savors, with his fingers he drew lines upon his naked body, so far was he take from himself, and brought into ecstasy or trance, with the delight he had in the study of geometry”
In 212 BCE, the Romans were in the process of capturing Syracuse in the Second Punic War. He was apparently captured while contemplating a mathematical diagram of circles. He was so entranced by his work, he turned down an ordered meeting with General Mercellus. He told the Roman soldier that summoned him, “do not disturb my circles.” Those would be his famous last words, because he was immediately killed because of his insubordination.
Since his death most of his work has been destroyed. We know a lot about his work due to other people’s written accounts. We know most of his work must have survived through the Middle Ages and the early Renaissance because: Galileo, Johannes Kepler, René Descarte, and Pierre de Fermat all wrote about Archimedes' influence in their publications centuries later.
Elephant Learning accurately tests and evaluates kids at different grade levels to see if they truly get what they should be learning. It then adjusts what they’re learning to ensure they understand math conceptually right from the start. The app provides educational games for the kids while also providing parents with reports and information on how the app is actually teaching a concept. Parents will find games to play with their children outside of the app that further support learning. We break it down for you, telling you how to help your child along every step of the way and showing you how to identify your child’s misunderstandings simply. For instance, rather than correcting them or showing them how to do the math problem correctly, ask them why they think they’re correct; you’re going to see what they misunderstand nearly immediately and be able to give them a hint on how to overcome it. This way, Elephant Learning is empowering to the student, but it’s also empowering to the parent. You no longer have to be afraid to take your child’s math education into your own hands.
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