at the crack of dawn

idiomPart ofdawn

at the crack of dawn — idiom

1. very early in the morning, at or just before the first light of day, usually ear

1.idiom
Definition

very early in the morning, at or just before the first light of day, usually earlier than what is considered normal

Example

The fishermen set out to sea at the crack of dawn to reach the best fishing waters.

Fatima woke up at the crack of dawn to catch her flight to Seoul.