On Saturday, March 23, the NOS broadcasts the official starting signal with astronaut and WWF ambassador André Kuipers from 8.15 pm onwards. Come see the event and put the Erasmus Bridge together with André on black! At 8 pm everyone can gather at the monument at Leuvehoofd in Rotterdam to experience this special moment. Naturally, de Rotterdam is participating in this important event that is organized by the World Wildlife Fund.