World Humanist Day, celebrated on June 21st, honors the philosophy of humanism, which emphasizes reason, ethics, and human welfare over supernatural beliefs. It’s a day to promote critical thinking, compassion, and social justice, and to celebrate the power humans have to improve the world through knowledge and ethical action. Chosen to coincide with the summer solstice, the day symbolizes light, learning, and enlightenment, reflecting humanism’s focus on reason and the betterment of humanity.