This Friday icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 15,300 icons, all in the same style and quality.
It's a logo of a calendar page. There are two rings on top then a page coming down with a line near the top of the page. On the larger lower part of the calendar page are the letters "Fr" representing Friday.