This is a picture of the sun that is coming out from the top of a horizontal line. underneath the line is the rest of the sun but it's composed of dotted lines instead of solid. the number 18 with the degrees sign is in the center of the sun
This Day Night 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 6,000 icons, all in the same style and quality.