March 7 (UPI) -- The United Nations on Thursday marked the upcoming International Women's Day with a call for feminine equality under a banner of rights and empowerment. The event is observed worldwide on Saturday. Advertisement "This year's theme calls for action that can unlock equal rights, power and opportunities for all and a feminist future where no one is left behind," a release from the United Nations said. "Central to this vision is empowering the next generation -- youth, particularly