This Timezone -8 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.
A horizontal rectangle with zig-zag lines at the top and bottom and four columns of parsed dots on the inside. There is a circle overlapping the bottom right quarter of the rectangle with a plus symbol followed by the number eight inside of it.