The National Day of Reason is celebrated annually on the first Thursday in May in the United States as a secular alternative to the National Day of Prayer. Established by the American Humanist Association and the Washington Area Secular Humanists, this holiday aims to provide a positive, inclusive space for individuals who do not recognize God or established religions. Celebrations often include community-building activities such as blood drives, secular events, and sometimes protests against the National Day of Prayer. The day emphasizes the importance of the separation of religion and government and encourages volunteerism during the Secular Week of Action. Over time, it has gained recognition from various local and state governments, with support from politicians advocating for its acknowledgment.