When Is National Sisters Day 2025? Check Date, History, Significance, Wishes And More

National Sisters Day is a unique event honouring the relationship between sisters and the essential role they play in our lives. It is a time to honour our dear sisters, treasure the memories, and show them how much we care. The event is meant to honour the sisterly bond and show appreciation to their siblings for supporting them through both good and bad times. People celebrate this day with great delight and fervour as they unite to honour the special bond they have with their siblings.

In 2025, National Sisters’ Day — also known just as Sisters Day — will be observed on Sunday, August 3, the first Sunday in August. This date changes somewhat every year, but the scheduling guideline remains the same, which is the first Sunday in August.

The term ‘sister’ originated from the Old Norse word ‘systir,’ which itself derives from the Proto-Germanic word ‘swester.’ Sisters in modern society are both our close female friends and our female siblings.

While some sources date the origins of National Sisters Day in the United States to 1993, others attribute its formal establishment in 1996 to Tricia Elleogram and Stacey Berry in Tennessee, who created the day to celebrate sisterhood. Greeting card companies, social media, and word-of-mouth helped the day grow in popularity, bringing sisters from all over the world together to celebrate.

Manga artist Kunio Hatada created the Japanese equivalent, known as Younger Sister's Day, on September 6, 1991. Hatada wanted to pay tribute to the kind, nurturing traits he observed in younger sisters, both in real life and in fiction.

Sister's Day is considered to be a meaningful holiday for people who have siblings or acquaintances who regard themselves as close as sisters. One could organise various activities for this day, such as giving your sisters special treatment or spending quality time together.

The primary goal of establishing this unique day is to recognise and celebrate the sisterly connection and to spread the love and care that sisters have for one another, among other important goals.

Whether sisters are related by blood or have a close, sister-like friendship, National Sisters Day celebrates the special and often complicated bond between them. This day honours a common past, mutual assistance, tacit understanding, devotion, and enduring impact.

Spend time together: Plan a get-together, sister date, or game night with your siblings to spend quality time together.

Show gratitude: Use hashtags like #NationalSistersDay to share personal letters, comments, or tributes on social media.

Create memories: Cook with your sister, go over old pictures, or give her a personalised present.

Add "chosen sisters" to the list: Pay tribute to coworkers, close friends, or cousins who also feel like sisters.

1. "Having a sister is like having a best friend you can't get rid of. You know whatever you do, they'll still be there." -  Amy Li

2. "Sisters function as safety nets in a chaotic world simply by being there for each other." - Carol Saline

3. "A sister reflects you, yet she is uniquely her own." - Elizabeth Fishel

4. "A sister: a confidante for the soul, a golden link to life's essence." - Isadora James

1. The only person who ever questions my ability is you. Thank you for constantly encouraging me through the tough times, sister.

2. Happy Sister's Day to the one who still loves me the most and knows me the best. You're not just my sister, you’re my forever friend.

3. You have supported me more than anyone else through every argument, every giggle, and every cry. I hope you have a wonderful Sister's Day!

4. No bond is as comforting as the one between sisters. May we always be annoying, motivating, and in love with one another. Happy Sister’s Day!