zero hour
US /ˈzɪroʊ ˈaʊər/
UK /ˈzɪroʊ ˈaʊər/
1.
hora zero, momento decisivo
the time at which a planned operation or event is scheduled to begin
:
•
The troops were ready for zero hour, awaiting the command to advance.
As tropas estavam prontas para a hora zero, aguardando o comando para avançar.
•
The launch countdown began, signaling that zero hour was approaching.
A contagem regressiva do lançamento começou, sinalizando que a hora zero estava se aproximando.