1. The deployment or release of a spacecraft, rocket, or satellite during nighttime hours
The nocturnal launch of the satellite was visible across several states.
O lançamento noturno do satélite foi visível em vários estados.
2. The introduction or release of a product or service during nighttime or evening hours
The company planned a nocturnal launch event for their new app at midnight.
A empresa planejou um evento de lançamento noturno para seu novo aplicativo à meia-noite.