dark hours

He chose to go through the dark hours alone, and remained outwardly the same serene and cheerful young man as before.

The breeze steadied down during the dark hours, and the 'Valkyrie' had a day just to her liking.

The wind hardened during the dark hours, and was blowing a moderate gale from the south-west at sunrise.

Morning was at hand, and Matt, who had been working like a Turk through the dark hours, was not yet at the Bluebell!

All during the dark hours a heavy fire was kept going, while the men alternated, in pairs, at sentry duty.