This is an icon of the number 24 in a calendar. The calendar is a direct reflection of the image of a calendar hanging on a wall. It appears with two binders on top. A top section of the calendar were the clips are and a bottom section where the number is.
This Calendar 24 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 5,700 icons, all in the same style and quality.