This Time Span 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 4,400 icons, all in the same style and quality.
The outer shape is a circle. In the center of the circle is a dot with two straight lines extending towards the outer circle. One line is shorter and points in towards the right and the other line is longer and points towards the upper left. A one eighth section of the circle is filled in with parallel lines.