National First Ladies Day, also known as First Ladies Day, is observed in the United States on the last Saturday in April. This holiday honors the contributions of women who have served as first ladies, a role traditionally held by the president’s spouse. The observance was established by Rev. Nicholas W. Inman in 2021, in collaboration with the Society of Presidential Descendants, and commemorates the inauguration of George Washington on April 30, 1789. Although it is not yet formally recognized as a national holiday, civic groups, community organizations, schools, and museums across the country organize events and activities to celebrate. Participants often share their admiration for inspiring first ladies on social media using the hashtags #FirstLadiesDay and #NationalFirstLadiesDay. The role of first ladies has evolved to include advocacy in various areas such as education and public health, with many first ladies choosing specific causes to champion.