How to Say "wake-up call" in Spanish
The Spanish word for “wake-up call” is “diana” — B2 level.
English → SpanishB2
nounB2
a loud signal to wake up

Examples
La diana sonó a las seis de la mañana en el campamento.
Reveille (the wake-up call) sounded at six in the morning at the camp.
Odio el sonido de la diana, me asusta cada día.
I hate the sound of the bugle call; it startles me every day.
Context is Key
If you hear 'diana' used with verbs like 'tocar' (to play) or 'sonar' (to sound), it almost certainly refers to the bugle call, not the physical target.
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