1. A scheduled time period during night hours for broadcasting, programming, or events
The new talk show was given a prime nighttime slot on Friday nights.
O novo talk show recebeu um horário noturno privilegiado nas noites de sexta-feira.
2. A designated time slot during evening/night hours for any scheduled activity or appointment
I managed to book a nighttime slot at the gym after work.
Consegui agendar um horário noturno na academia após o trabalho.