Idea of Sunlight Icon
There is a circle with ten small lines radiating from it's outline on the outside. In addition, there is one long large diagonal line descending from the top left, cutting through the circle's middle and ending to the bottom and right of it.
This Sunlight icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.