National Siblings Day
Celebrate the unique bond between brothers and sisters—your built-in best friends, partners in crime, and lifelong companions.
What Is National Siblings Day?
National Siblings Day, celebrated annually on April 10th, honors the special relationship between brothers and sisters. Founded in 1995 by Claudia Evart to honor her siblings who passed away at young ages, the day celebrates the lifelong bond that only siblings share—from shared childhood memories to adult friendship.
Siblings are our first friends, our fiercest protectors, and often our most honest critics. They know us better than almost anyone—they witnessed our awkward phases, shared our family dynamics, and shaped who we became. National Siblings Day is a chance to appreciate these irreplaceable relationships and remind our siblings how much they mean to us.
Why Celebrate?
Unique Lifelong Bond
Siblings are often the longest relationships we have—outlasting friendships, spanning decades, and connecting our past to our present.
Shared History
No one else remembers your childhood quite like a sibling. They're living witnesses to your story—the good, the bad, and the embarrassing.
Strengthen Adult Relationships
As adults, siblings can drift apart. This day encourages reconnection and reminds us to invest in these important family relationships.
Honor All Sibling Bonds
Whether biological, step, adopted, or chosen siblings—all these relationships deserve recognition and celebration.
Ways to Celebrate
Create a Sibling Memory Card
Gather messages from all siblings sharing favorite memories, inside jokes, or reasons you're grateful for each other. A digital keepsake of your bond.
Share Throwback Photos
Create a card filled with childhood photos, embarrassing moments, and visual proof of how far you've all come. Nostalgia is powerful!
Surprise a Sibling
Coordinate with extended family to create a surprise appreciation card for one sibling. Let them know how much they mean to everyone.
Plan a Siblings Reunion
Use the day to schedule a get-together—virtual or in-person. Send a card beforehand building excitement or afterward capturing highlights.
Honor Siblings Who Passed
For those who've lost siblings, create a memorial card where family shares favorite memories and celebrates their enduring impact.
Include Chosen Siblings
Celebrate "brothers and sisters from other misters"—close friends who are family by choice. Create cards honoring these special bonds too.
National Siblings Day Message Ideas
"You annoyed me endlessly growing up, but you also had my back every single time. Thanks for being my protector, my rival, and my lifelong friend. Happy Siblings Day, bro."
"From sharing secrets to sharing clothes (without asking!), you've been there through everything. Grateful for a sister who's also a best friend. Love you always."
"Growing up with you all was chaos, competition, and constant laughter. I wouldn't trade our bond for anything. Happy Siblings Day to the best crew I never chose but always needed."
"You paved the way, set the example, and showed me what was possible. Thanks for being my first role model and for still looking out for me. Happy Siblings Day!"
"Watching you grow up has been one of my greatest joys. I'm so proud of who you've become. Thanks for keeping me young and reminding me what matters. Love you, kiddo."
"You're not just my sibling—you're my favorite person to call, my most trusted advisor, and the one who gets all my references. Lucky to have you. Happy Siblings Day!"
"We've had our ups and downs, but we're still here. Thanks for being willing to work on our relationship. Family is worth it. Happy Siblings Day."
"We may not have started out together, but you're my sibling in every way that counts. Family isn't just blood—it's the people who show up. Happy Siblings Day!"
Tips for Celebrating Siblings
Share Old Photos
Throwback photos spark nostalgia and laughter. Include childhood pics, awkward phases, and visual proof of your shared history.
Be Specific
Instead of "you\'re great," mention specific memories, qualities, or moments. "Remember when you..." or "I appreciate how you..." makes messages meaningful.
Acknowledge Complicated Relationships
Not all sibling relationships are perfect. It\'s okay to acknowledge complexity while still celebrating the bond and hoping for connection.
Include All Siblings
Celebrate step-siblings, half-siblings, adopted siblings, and chosen siblings. Family is defined by love and commitment, not just biology.
Common Questions
When is National Siblings Day?
National Siblings Day is celebrated annually on April 10th in the United States. It was founded in 1995 by Claudia Evart.
What if I'm an only child?
You can still celebrate! Honor close friends who feel like siblings, cousins who filled that role, or simply appreciate the unique experience of being an only child.
Can I celebrate if my relationship with my sibling is complicated?
Absolutely. Use the day as you see fit—to reach out and rebuild, to appreciate from a distance, or to simply acknowledge the bond. There's no one right way to celebrate.
Should I celebrate step-siblings or half-siblings?
Yes! All sibling relationships deserve recognition. Family is defined by shared experiences and love, not genetics. Celebrate whoever fills that sibling role in your life.
What if my sibling has passed away?
National Siblings Day can honor their memory. Share favorite stories, create a memorial card with family, or simply take time to reflect on their impact on your life.
Other April Occasions
Ready to Celebrate Your Siblings?
Honor the bond you share. Create a free group eCard in 30 seconds.
Create Siblings Day eCard