This is logo for calendar 18. This icon has a picture of a page of a calendar and it appears to be hanging.There are two rectangle on the top to denote that it is hanging. In the picture the number 18 is displayed in it.
This Calendar 18 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.