Game Development Reference
Time for action - creating Sunlight in Unity
Go to GameObject ¦ Create Other ¦ Direcional Light .
Click on Color and select the shade you want. Slightly off-white is good.
Then click on x .
With the light selected, click on the Rotate buton as shown in the following
screenshot. Now, use the cursor on the globe to rotate the light so that the rays
are poining tards the terrain.