Claudia Evart, a native New Yorker and resident of New York City, founded the Siblings Day Foundation (SDF) as a tax-exempt organization. Inspired by the loss of her siblings Alan (age 36) and Lisette (age 19) at a young age, she created the SDF with the aim of establishing a National Siblings Day to be celebrated annually on April 10, Lisette's birthday. The foundation achieved non-profit status in 1999.
Carolyn Maloney, then the
U.S. representative for , officially saluted the holiday and introduced it into the official
Congressional Record of the
United States Congress on April 10, 1997; and in subsequent years 2001, 2005 and 2008. The foundation has received formal recognition from three American presidents. Presidents Clinton, Bush, and Obama each signing Presidential Messages in 2000, 2008, and 2016 respectively, praising the foundation's efforts. The foundation has also garnered widespread support from 49 U.S. governors. Notable individuals such as Senators Edward Kennedy, Chuck Schumer, Hillary Clinton, and Kirsten Gillibrand, seven White House cabinet members, three New York mayors, the Manhattan Borough President, various state and local elected officials, celebrities including Oprah Winfrey, and siblings across America have also commended the Siblings Day Foundation. Siblings Day has expanded internationally, with fourteen countries including Australia, Brazil, Canada, Ghana, India, Ireland, Japan, New Zealand, Nigeria, the Philippines, Singapore, South Africa, Sweden, and the United Kingdom either continuing or adopting the celebration since 2014. Siblings Day has gained attention through its coverage in various media outlets including CNN, Voice of America, International Business Times, and YouTube's global blog. It's also a popular topic on social media platforms such as Facebook, Twitter, Instagram, YouTube, and Tumblr. Since its inception in 1995, has become very popular and the President of Republic of Portugal greeted it publicly, in 2016 and 2017. The siblings' day is celebrated across European countries: Austria, Cyprus, Croatia, Czech Republic, Estonia, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Portugal, Romania, Serbia and Switzerland. But adherence to the date and spirit of May 31 or April 10, the original date established for the Siblings Day, is open to any other European or non-European country. == Celebration ==