the still of (the) night
The most calm and quiet period in the night. And in the still of night, when you and your brother are fast asleep, Santa comes down through the chimney to leave presents under the tree! I love sitting out on the back porch in the still of the night, gazing up at the eternity of stars above.
the still of the ˈnight
(literary) the time during the night when it is silent and calm