One day — One continued day, no setting of the sun to make it quite night: God will always act in order to the full salvation of his spiritual Jerusalem. Known unto the Lord — The Lord knows when it shall begin, and how, and when it shall end.
Related Commentaries of Zechariah 14:7
Zechariah 14:7
7 But it shall be one day which shall be known to the LORD, not day, nor night: but it shall come to pass, that at evening time it shall be light.