The National Day of Reason is celebrated annually on the first Thursday in May as a secular holiday in the United States, created in response to the National Day of Prayer. It aims to provide a positive and inclusive alternative for individuals who do not recognize God or an established religion. The day emphasizes the separation of religion and government and seeks to foster community among non-religious individuals. Typical observances include blood drives, secular events, and activities, as well as protests against the National Day of Prayer. The holiday has gained recognition from various local and state governments and has received support from politicians, highlighting its growing significance within the secular community.