1. The release or introduction of a product, service, event, or spacecraft during the evening hours
The company scheduled an evening launch for their new smartphone to attract more viewers.
A empresa agendou um lançamento noturno para seu novo smartphone para atrair mais espectadores.
2. Specifically, the takeoff of a rocket or spacecraft during evening hours
The space agency conducted an evening launch of the satellite from the coastal facility.
A agência espacial realizou um lançamento noturno do satélite a partir da instalação costeira.