According to Hootsuite’s 2025 Social Trends Report, 43% of organizations have experimented with a new tone of voice, personality, or persona in the last year – a trend they expect to continue well into 2025. But creating fun, relatable content doesn’t magically happen – it takes careful planning and creative ideas! 

Celebrating holidays that are relevant to your mission is a great opportunity to engage with your audience, steward your donors, enhance brand awareness and increase your likelihood to go viral. But, creating your annual content calendar can feel like a daunting task. Taking the time and energy to search the internet for every holiday you need to recognize is a huge endeavor. But MemoryFox is here to help! 

First, did you get a chance to read 2025 Nonprofit Holidays You Don’t Want To Miss? I recommend you start your planning with this list of essential nonprofit holidays, federal holidays and some “just for fun” content.

Now, let’s dig a little deeper! The following holidays are broken down by specific nonprofit categories:

• Arts & Culture
• Conservation & Environment
• Education
• Healthcare & Human Services
• Housing Services & Unhoused Populations
• Intellectual & Developmental Disabilities 
• Mental Health & Wellness
• Pets & Animals
• Social Justice
• Veteran & Military Families
• Youth Mentorship

NOTE: I understand that this is not a comprehensive list. I chose a few of the most common categories and the standout holidays for each. If you’d like your nonprofit category added to our list, drop your information below. I am more than happy to find holidays that are specific to you!

 Arts & Culture

• National Arts Month – February
• International Week of Black Women in the Arts – February 7-15
• Youth Art Month – March
• World Day of Theater for Children and Young People – March 20
• Shakespeare Week – March 24-30
• World Theater Day – March 27
• National Poetry Month – April
• Jazz Appreciation Month – April
• World Art Day – April 15
• National Creativity Day – May 30
• World Day for Cultural Diversity for Dialogue and Development – May 21
• World Day of Music – June 21 
• American Artists Appreciation Month – August
• National Fine Art Appreciation Day – October 25th

Conservation & Environment 

• World Wildlife Day – March 3 
• Earth Day – April 22

FOX TIP: Collect videos and photos from your volunteers of them enjoying their favorite outdoor activity in your community. Then, share with your followers and ask them to contribute in the comments! Your audience will love seeing you perform your mission, and you might even learn a new place to take your dog on their next walk!

• Arbor Day – April 25 (different based on the state, other date is March 21)
• World Rainforest Day – June 22
• America Recycles Day – November 15 
• National Energy Conservation Day – December 14

Education

• International Day of Education – January 24
• International Day of Women and Girls in Science – February 11
• Read Across America Day / Dr. Seuss Day – March 2
• World Book Day – April 23

FOX TIP: Create a staff reading list! Ask your employees to share a book that has positively impacted their life and share with your followers. Simply use MemoryFox to collect staff submissions, create a video montage on Canva, and show your followers your results. You might be surprised to learn which genre your coworker prefers!

• International Museum Day – May 18
• National Higher Education Day – June 6
• Read A Book Day – September 6 

Healthcare & Human Services

• International Childhood Cancer Day – February 15
• Rare Diseases Day – February 28
• National Doctors’ Day – March 30
• World Autism Day – April 2
• World Health Day – April 7
• National Nurses Day – May 6
• National Cancer Survivors Day – June 1 

Housing Services & Unhoused Populations

• National Fair Housing Month – April
• Home Ownership Month – June
• National Good Neighbor Day – September 28 
• World Homeless Day – October 10
• National Homelessness Awareness Month – November
• National Homeless Persons’ Memorial Day – December 21 

Intellectual & Developmental Disabilities 

• World Braille Day – January 4
• Rare Disease Day – February 28
• Developmental Disabilities Month – March
• International Wheelchair Day – March 1
• World Down Syndrome Day – March 21
• World Autism Awareness Day – April 2
• ALS Awareness Month – May
• Alzheimer’s & Brain Awareness Month – June
• Disability Pride Month – July
• Disability Awareness Day – July 14
• World Alzheimer’s Day – September 21
• International Day of Sign Language – September 23
• Down Syndrome Awareness Month – October
• Invisible Disabilities Week – October 19 – 25
• International Day of Persons with Disabilities – December 3 

Mental Health & Wellness

• Mind-Body Wellness Day – January 3
• World Health Day – April 7 
• Mental Health Awareness Month – May
• World Meditation Day – May 21 
• Global Wellness Day – June 14
• World Suicide Prevention Day – September 10
• World Mental Health Day – October 10

Pets & Animals

• Dress Up Your Pet Day – January 14 (Need I say more??)
• National Justice for Animals Week: February 16-22
• National Adopt A Shelter Pet Day – April 30 
• Cat World Domination Day: June 24
• World Day against the abandonment of domestic animals: June 28
• Spoil Your Dog Day: August 10

Social Justice

• Rosa Parks Day – February 4 (Rosa Park’s Birthday)
• Zero Discrimination Day – March 1 
• International Transgender Day of Visibility – March 31
• World Day for International Justice – July 17
• Women’s Equality Day – August 26
• International Women’s Day: March 8
• National Coming Out Day – October 11
• International Day of the Girl – October 11
• International Day of Tolerance – November 16
• World Children’s Day – November 20
• Human Rights Day – December 10 

Veteran & Military Families

• Full list of Military Branch Birthdays
• National K9 Veterans Day – March 13
• National Medal of Honor Day – March 25
• Military Spouse Appreciation Day – May 9
• National PTSD Awareness Day – June 27
• National Hire A Veteran Day – July 25

FOX TIP: Take this day to highlight a business on your social channels that makes it a priority to hire veterans. If you are an organization that works with several organizations that fit this bill, make a video compilation of their logos and create a short-form video. Be sure to celebrate their mission, explain their initiatives, and don’t forget to tag them! 

• Purple Heart Day – August 7
• Gold Star Families Day – September 28 
• Pearl Harbor Remembrance Day – December 7 

Youth Mentorship

• National Mentoring Month – January
• I Am A Mentor Day – January 7 
• International Mentoring Day – January 17 
• Thank Your Mentor Day – January 21 
• National Day of Encouragement – September 12 
• Positive Thinking Day – September 13
• National Mentoring Day – October 27 

I wish you the best of luck planning your 2025 content calendar, and I hope these mission-related nonprofit holidays and fox tips add value to your channels.

Looking to keep these holidays organized? Fill out this form to receive this list as a Google Sheet: