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National Sisters Day

Show your sister some love this National Sisters Day - take the time to bond and make memories that will last a lifetime!

Sunday

August 2026

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEFirst Sunday in August

OBSERVED INUnited States

CATEGORYRelationships

SUBCATEGORYSiblings

INTRO

Introduction

PHOTO

Celebrate the special bond between sisters on National Sisters Day, which falls on the first Sunday of August each year. The day was created to honor the unique relationship shared by siblings and has been celebrated since 1993. It's an opportunity to show your sister just how much you love and appreciate her, with thoughtful gestures or simply sharing a laugh together. Whether you are lucky enough to have a biological sister, or someone that you consider a sister from another mister, don't forget to take time out of this special day to recognize just how important she is in your life!

DEALS & OFFERS

Past offers

No active deals yet — here’s who’s celebrated before.

Nothing yet for 2026

Brands typically announce offers a week before the date. Check back closer to the day.

2 brands have run a deal

The Artisan Crepe

Fozzy’s Bar & Grill

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TIMELINE

National Sisters Day Timeline

Inception of National Sisters Day

National Sisters Day was first celebrated in the year 1993, providing an opportunity for siblings to acknowledge the role sisters play in their lives.

Recognition of Non-biological Sisters

Recognition of non-biological sisters increased, highlighting the importance of chosen family alongside blood relatives.

Increased Media Attention

Media attention towards National Sisters Day steadily increased, with more magazines and online platforms promoting the day.

Celebrity Acknowledgement

Celebrities began publically acknowledging and celebrating National Sisters Day, further increasing the day's popularity.

Global Participation

National Sister's Day began to be celebrated in other countries in addition to the USA, making the day more internationally recognized and celebrated.

GET INVOLVED

How to Celebrate National Sisters Day

Throw a sisters party

Throw a special sisters party and invite all your sisters over for a day of fun. Make sure to include games, snacks, and activities that they can all enjoy together.

Go on a sister date

Take your sister out on a special date -- go see a movie, go shopping, or just spend some time talking and catching up. It's a great time to reconnect with your sibling and have some fun together.

SEND

Send her a card

Send your sister a special card to let her know how much you appreciate her. You can even include a gift card or small present to show how much you care.

WRITE

Write her a letter

Write your sister a heartfelt letter and tell her how much she means to you. Share your favorite memories and tell her why you are grateful to have her in your life.

PLAN

Plan an adventure

Plan an adventure with your sister, whether it's a weekend trip or an afternoon outing. This is the perfect way to bond and create lasting memories together.

WHY THIS DAY MATTERS

Why We Love National Sisters Day

Sisters make memories

The good times spent with sisters are the ones we remember most fondly. From staying up late talking to having silly arguments - these memories form part of what makes sisters such incredible people and a integral part of family life.

Sisters are always there for support

Whether it's celebrating a milestone together or offering a shoulder to cry on during hard times, sisters are the best source of support in life. They know you better than anyone and are always there to offer encouragement when you need it most.

Sisters share unique bond

Sibling relationships go beyond what can be explained. Sisters share similar qualities and experiences that no one else can fully understand. Being able to connect with someone this way is an amazing feeling – even if they drive you crazy sometimes!