It is recognized by the presence of weak sunlight, while the Sun itself is still below the horizon.

There's a weak sunlight making its way in through the windows, but it's too much to hope that it won't rain.

The weak sunlight of the early morning had increased in strength.

He rose and followed Rage out into the weak sunlight.

I checked my distance from the weak sunlight at the entrance; I was well away.

Then he looked at it again, turning it curiously in the weak sunlight.

He swept aside the portal and stepped out into the weak sunlight.

They could see bodies rotting on shore in the weak sunlight.

Caramon saw only himself reflected there, standing in a patch of weak, winter sunlight.

In the weak sunlight from the window, I saw gray in her hair for the first time.